1261980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:81

約数の個数: 120

約数和(自身を含む): 4268880

約数和(自身を除く): 3006900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 41, 45, 54, 57, 60, 76, 81, 82, 90, 95, 108, 114, 123, 135, 162, 164, 171, 180, 190, 205, 228, 246, 270, 285, 324, 342, 369, 380, 405, 410, 492, 513, 540, 570, 615, 684, 738, 779, 810, 820, 855, 1026, 1107, 1140, 1230, 1476, 1539, 1558, 1620, 1710, 1845, 2052, 2214, 2337, 2460, 2565, 3078, 3116, 3321, 3420, 3690, 3895, 4428, 4674, 5130, 5535, 6156, 6642, 7011, 7380, 7695, 7790, 9348, 10260, 11070, 11685, 13284, 14022, 15390, 15580, 16605, 21033, 22140, 23370, 28044, 30780, 33210, 35055, 42066, 46740, 63099, 66420, 70110, 84132, 105165, 126198, 140220, 210330, 252396, 315495, 420660, 630990, 1261980]

約数ペア:

[(1, 1261980), (2, 630990), (3, 420660), (4, 315495), (5, 252396), (6, 210330), (9, 140220), (10, 126198), (12, 105165), (15, 84132), (18, 70110), (19, 66420), (20, 63099), (27, 46740), (30, 42066), (36, 35055), (38, 33210), (41, 30780), (45, 28044), (54, 23370), (57, 22140), (60, 21033), (76, 16605), (81, 15580), (82, 15390), (90, 14022), (95, 13284), (108, 11685), (114, 11070), (123, 10260), (135, 9348), (162, 7790), (164, 7695), (171, 7380), (180, 7011), (190, 6642), (205, 6156), (228, 5535), (246, 5130), (270, 4674), (285, 4428), (324, 3895), (342, 3690), (369, 3420), (380, 3321), (405, 3116), (410, 3078), (492, 2565), (513, 2460), (540, 2337), (570, 2214), (615, 2052), (684, 1845), (738, 1710), (779, 1620), (810, 1558), (820, 1539), (855, 1476), (1026, 1230), (1107, 1140)]