18879420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{569}}^1$

素因数の和:667

約数の個数: 96

約数和(自身を含む): 61286400

約数和(自身を除く): 42406980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 79, 84, 105, 140, 158, 210, 237, 316, 395, 420, 474, 553, 569, 790, 948, 1106, 1138, 1185, 1580, 1659, 1707, 2212, 2276, 2370, 2765, 2845, 3318, 3414, 3983, 4740, 5530, 5690, 6636, 6828, 7966, 8295, 8535, 11060, 11380, 11949, 15932, 16590, 17070, 19915, 23898, 33180, 34140, 39830, 44951, 47796, 59745, 79660, 89902, 119490, 134853, 179804, 224755, 238980, 269706, 314657, 449510, 539412, 629314, 674265, 899020, 943971, 1258628, 1348530, 1573285, 1887942, 2697060, 3146570, 3775884, 4719855, 6293140, 9439710, 18879420]

約数ペア:

[(1, 18879420), (2, 9439710), (3, 6293140), (4, 4719855), (5, 3775884), (6, 3146570), (7, 2697060), (10, 1887942), (12, 1573285), (14, 1348530), (15, 1258628), (20, 943971), (21, 899020), (28, 674265), (30, 629314), (35, 539412), (42, 449510), (60, 314657), (70, 269706), (79, 238980), (84, 224755), (105, 179804), (140, 134853), (158, 119490), (210, 89902), (237, 79660), (316, 59745), (395, 47796), (420, 44951), (474, 39830), (553, 34140), (569, 33180), (790, 23898), (948, 19915), (1106, 17070), (1138, 16590), (1185, 15932), (1580, 11949), (1659, 11380), (1707, 11060), (2212, 8535), (2276, 8295), (2370, 7966), (2765, 6828), (2845, 6636), (3318, 5690), (3414, 5530), (3983, 4740)]