640131660

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2971}}^1$

素因数の和:3018

約数の個数: 240

約数和(自身を含む): 2416592640

約数和(自身を除く): 1776460980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 27, 28, 30, 35, 36, 38, 42, 45, 54, 57, 60, 63, 70, 76, 81, 84, 90, 95, 105, 108, 114, 126, 133, 135, 140, 162, 171, 180, 189, 190, 210, 228, 252, 266, 270, 285, 315, 324, 342, 378, 380, 399, 405, 420, 513, 532, 540, 567, 570, 630, 665, 684, 756, 798, 810, 855, 945, 1026, 1134, 1140, 1197, 1260, 1330, 1539, 1596, 1620, 1710, 1890, 1995, 2052, 2268, 2394, 2565, 2660, 2835, 2971, 3078, 3420, 3591, 3780, 3990, 4788, 5130, 5670, 5942, 5985, 6156, 7182, 7695, 7980, 8913, 10260, 10773, 11340, 11884, 11970, 14364, 14855, 15390, 17826, 17955, 20797, 21546, 23940, 26739, 29710, 30780, 35652, 35910, 41594, 43092, 44565, 53478, 53865, 56449, 59420, 62391, 71820, 80217, 83188, 89130, 103985, 106956, 107730, 112898, 124782, 133695, 160434, 169347, 178260, 187173, 207970, 215460, 225796, 240651, 249564, 267390, 282245, 311955, 320868, 338694, 374346, 395143, 401085, 415940, 481302, 508041, 534780, 561519, 564490, 623910, 677388, 748692, 790286, 802170, 846735, 935865, 962604, 1016082, 1123038, 1128980, 1185429, 1203255, 1247820, 1524123, 1580572, 1604340, 1684557, 1693470, 1871730, 1975715, 2032164, 2246076, 2370858, 2406510, 2540205, 2807595, 3048246, 3369114, 3386940, 3556287, 3743460, 3951430, 4572369, 4741716, 4813020, 5080410, 5615190, 5927145, 6096492, 6738228, 7112574, 7620615, 7902860, 8422785, 9144738, 10160820, 10668861, 11230380, 11854290, 14225148, 15241230, 16845570, 17781435, 18289476, 21337722, 22861845, 23708580, 30482460, 32006583, 33691140, 35562870, 42675444, 45723690, 53344305, 64013166, 71125740, 91447380, 106688610, 128026332, 160032915, 213377220, 320065830, 640131660]

約数ペア:

[(1, 640131660), (2, 320065830), (3, 213377220), (4, 160032915), (5, 128026332), (6, 106688610), (7, 91447380), (9, 71125740), (10, 64013166), (12, 53344305), (14, 45723690), (15, 42675444), (18, 35562870), (19, 33691140), (20, 32006583), (21, 30482460), (27, 23708580), (28, 22861845), (30, 21337722), (35, 18289476), (36, 17781435), (38, 16845570), (42, 15241230), (45, 14225148), (54, 11854290), (57, 11230380), (60, 10668861), (63, 10160820), (70, 9144738), (76, 8422785), (81, 7902860), (84, 7620615), (90, 7112574), (95, 6738228), (105, 6096492), (108, 5927145), (114, 5615190), (126, 5080410), (133, 4813020), (135, 4741716), (140, 4572369), (162, 3951430), (171, 3743460), (180, 3556287), (189, 3386940), (190, 3369114), (210, 3048246), (228, 2807595), (252, 2540205), (266, 2406510), (270, 2370858), (285, 2246076), (315, 2032164), (324, 1975715), (342, 1871730), (378, 1693470), (380, 1684557), (399, 1604340), (405, 1580572), (420, 1524123), (513, 1247820), (532, 1203255), (540, 1185429), (567, 1128980), (570, 1123038), (630, 1016082), (665, 962604), (684, 935865), (756, 846735), (798, 802170), (810, 790286), (855, 748692), (945, 677388), (1026, 623910), (1134, 564490), (1140, 561519), (1197, 534780), (1260, 508041), (1330, 481302), (1539, 415940), (1596, 401085), (1620, 395143), (1710, 374346), (1890, 338694), (1995, 320868), (2052, 311955), (2268, 282245), (2394, 267390), (2565, 249564), (2660, 240651), (2835, 225796), (2971, 215460), (3078, 207970), (3420, 187173), (3591, 178260), (3780, 169347), (3990, 160434), (4788, 133695), (5130, 124782), (5670, 112898), (5942, 107730), (5985, 106956), (6156, 103985), (7182, 89130), (7695, 83188), (7980, 80217), (8913, 71820), (10260, 62391), (10773, 59420), (11340, 56449), (11884, 53865), (11970, 53478), (14364, 44565), (14855, 43092), (15390, 41594), (17826, 35910), (17955, 35652), (20797, 30780), (21546, 29710), (23940, 26739)]