19965960

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:185

約数の個数: 256

約数和(自身を含む): 80640000

約数和(自身を除く): 60674040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 27, 28, 30, 35, 36, 38, 40, 42, 45, 54, 56, 57, 60, 63, 70, 72, 76, 84, 90, 95, 105, 108, 114, 120, 126, 133, 135, 139, 140, 152, 168, 171, 180, 189, 190, 210, 216, 228, 252, 266, 270, 278, 280, 285, 315, 342, 360, 378, 380, 399, 417, 420, 456, 504, 513, 532, 540, 556, 570, 630, 665, 684, 695, 756, 760, 798, 834, 840, 855, 945, 973, 1026, 1064, 1080, 1112, 1140, 1197, 1251, 1260, 1330, 1368, 1390, 1512, 1596, 1668, 1710, 1890, 1946, 1995, 2052, 2085, 2280, 2394, 2502, 2520, 2565, 2641, 2660, 2780, 2919, 3192, 3336, 3420, 3591, 3753, 3780, 3892, 3990, 4104, 4170, 4788, 4865, 5004, 5130, 5282, 5320, 5560, 5838, 5985, 6255, 6840, 7182, 7506, 7560, 7784, 7923, 7980, 8340, 8757, 9576, 9730, 10008, 10260, 10564, 11676, 11970, 12510, 13205, 14364, 14595, 15012, 15846, 15960, 16680, 17514, 17955, 18487, 18765, 19460, 20520, 21128, 23352, 23769, 23940, 25020, 26271, 26410, 28728, 29190, 30024, 31692, 35028, 35910, 36974, 37530, 38920, 39615, 43785, 47538, 47880, 50040, 52542, 52820, 55461, 58380, 63384, 70056, 71307, 71820, 73948, 75060, 79230, 87570, 92435, 95076, 105084, 105640, 110922, 116760, 118845, 131355, 142614, 143640, 147896, 150120, 158460, 166383, 175140, 184870, 190152, 210168, 221844, 237690, 262710, 277305, 285228, 316920, 332766, 350280, 356535, 369740, 443688, 475380, 499149, 525420, 554610, 570456, 665532, 713070, 739480, 831915, 950760, 998298, 1050840, 1109220, 1331064, 1426140, 1663830, 1996596, 2218440, 2495745, 2852280, 3327660, 3993192, 4991490, 6655320, 9982980, 19965960]

約数ペア:

[(1, 19965960), (2, 9982980), (3, 6655320), (4, 4991490), (5, 3993192), (6, 3327660), (7, 2852280), (8, 2495745), (9, 2218440), (10, 1996596), (12, 1663830), (14, 1426140), (15, 1331064), (18, 1109220), (19, 1050840), (20, 998298), (21, 950760), (24, 831915), (27, 739480), (28, 713070), (30, 665532), (35, 570456), (36, 554610), (38, 525420), (40, 499149), (42, 475380), (45, 443688), (54, 369740), (56, 356535), (57, 350280), (60, 332766), (63, 316920), (70, 285228), (72, 277305), (76, 262710), (84, 237690), (90, 221844), (95, 210168), (105, 190152), (108, 184870), (114, 175140), (120, 166383), (126, 158460), (133, 150120), (135, 147896), (139, 143640), (140, 142614), (152, 131355), (168, 118845), (171, 116760), (180, 110922), (189, 105640), (190, 105084), (210, 95076), (216, 92435), (228, 87570), (252, 79230), (266, 75060), (270, 73948), (278, 71820), (280, 71307), (285, 70056), (315, 63384), (342, 58380), (360, 55461), (378, 52820), (380, 52542), (399, 50040), (417, 47880), (420, 47538), (456, 43785), (504, 39615), (513, 38920), (532, 37530), (540, 36974), (556, 35910), (570, 35028), (630, 31692), (665, 30024), (684, 29190), (695, 28728), (756, 26410), (760, 26271), (798, 25020), (834, 23940), (840, 23769), (855, 23352), (945, 21128), (973, 20520), (1026, 19460), (1064, 18765), (1080, 18487), (1112, 17955), (1140, 17514), (1197, 16680), (1251, 15960), (1260, 15846), (1330, 15012), (1368, 14595), (1390, 14364), (1512, 13205), (1596, 12510), (1668, 11970), (1710, 11676), (1890, 10564), (1946, 10260), (1995, 10008), (2052, 9730), (2085, 9576), (2280, 8757), (2394, 8340), (2502, 7980), (2520, 7923), (2565, 7784), (2641, 7560), (2660, 7506), (2780, 7182), (2919, 6840), (3192, 6255), (3336, 5985), (3420, 5838), (3591, 5560), (3753, 5320), (3780, 5282), (3892, 5130), (3990, 5004), (4104, 4865), (4170, 4788)]