81659340

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:426

約数の個数: 240

約数和(自身を含む): 308985600

約数和(自身を除く): 227326260

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, 379, 380, 399, 405, 420, 513, 532, 540, 567, 570, 630, 665, 684, 756, 758, 798, 810, 855, 945, 1026, 1134, 1137, 1140, 1197, 1260, 1330, 1516, 1539, 1596, 1620, 1710, 1890, 1895, 1995, 2052, 2268, 2274, 2394, 2565, 2653, 2660, 2835, 3078, 3411, 3420, 3591, 3780, 3790, 3990, 4548, 4788, 5130, 5306, 5670, 5685, 5985, 6156, 6822, 7182, 7201, 7580, 7695, 7959, 7980, 10233, 10260, 10612, 10773, 11340, 11370, 11970, 13265, 13644, 14364, 14402, 15390, 15918, 17055, 17955, 20466, 21546, 21603, 22740, 23877, 23940, 26530, 28804, 30699, 30780, 31836, 34110, 35910, 36005, 39795, 40932, 43092, 43206, 47754, 50407, 51165, 53060, 53865, 61398, 64809, 68220, 71631, 71820, 72010, 79590, 86412, 95508, 100814, 102330, 107730, 108015, 119385, 122796, 129618, 143262, 144020, 151221, 153495, 159180, 194427, 201628, 204660, 214893, 215460, 216030, 238770, 252035, 259236, 286524, 302442, 306990, 324045, 358155, 388854, 429786, 432060, 453663, 477540, 504070, 583281, 604884, 613980, 648090, 716310, 756105, 777708, 859572, 907326, 972135, 1008140, 1074465, 1166562, 1296180, 1360989, 1432620, 1512210, 1814652, 1944270, 2148930, 2268315, 2333124, 2721978, 2916405, 3024420, 3888540, 4082967, 4297860, 4536630, 5443956, 5832810, 6804945, 8165934, 9073260, 11665620, 13609890, 16331868, 20414835, 27219780, 40829670, 81659340]

約数ペア:

[(1, 81659340), (2, 40829670), (3, 27219780), (4, 20414835), (5, 16331868), (6, 13609890), (7, 11665620), (9, 9073260), (10, 8165934), (12, 6804945), (14, 5832810), (15, 5443956), (18, 4536630), (19, 4297860), (20, 4082967), (21, 3888540), (27, 3024420), (28, 2916405), (30, 2721978), (35, 2333124), (36, 2268315), (38, 2148930), (42, 1944270), (45, 1814652), (54, 1512210), (57, 1432620), (60, 1360989), (63, 1296180), (70, 1166562), (76, 1074465), (81, 1008140), (84, 972135), (90, 907326), (95, 859572), (105, 777708), (108, 756105), (114, 716310), (126, 648090), (133, 613980), (135, 604884), (140, 583281), (162, 504070), (171, 477540), (180, 453663), (189, 432060), (190, 429786), (210, 388854), (228, 358155), (252, 324045), (266, 306990), (270, 302442), (285, 286524), (315, 259236), (324, 252035), (342, 238770), (378, 216030), (379, 215460), (380, 214893), (399, 204660), (405, 201628), (420, 194427), (513, 159180), (532, 153495), (540, 151221), (567, 144020), (570, 143262), (630, 129618), (665, 122796), (684, 119385), (756, 108015), (758, 107730), (798, 102330), (810, 100814), (855, 95508), (945, 86412), (1026, 79590), (1134, 72010), (1137, 71820), (1140, 71631), (1197, 68220), (1260, 64809), (1330, 61398), (1516, 53865), (1539, 53060), (1596, 51165), (1620, 50407), (1710, 47754), (1890, 43206), (1895, 43092), (1995, 40932), (2052, 39795), (2268, 36005), (2274, 35910), (2394, 34110), (2565, 31836), (2653, 30780), (2660, 30699), (2835, 28804), (3078, 26530), (3411, 23940), (3420, 23877), (3591, 22740), (3780, 21603), (3790, 21546), (3990, 20466), (4548, 17955), (4788, 17055), (5130, 15918), (5306, 15390), (5670, 14402), (5685, 14364), (5985, 13644), (6156, 13265), (6822, 11970), (7182, 11370), (7201, 11340), (7580, 10773), (7695, 10612), (7959, 10260), (7980, 10233)]