21313740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1637}}^1$

素因数の和:1687

約数の個数: 96

約数和(自身を含む): 70447104

約数和(自身を除く): 49133364

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 84, 93, 105, 124, 140, 155, 186, 210, 217, 310, 372, 420, 434, 465, 620, 651, 868, 930, 1085, 1302, 1637, 1860, 2170, 2604, 3255, 3274, 4340, 4911, 6510, 6548, 8185, 9822, 11459, 13020, 16370, 19644, 22918, 24555, 32740, 34377, 45836, 49110, 50747, 57295, 68754, 98220, 101494, 114590, 137508, 152241, 171885, 202988, 229180, 253735, 304482, 343770, 355229, 507470, 608964, 687540, 710458, 761205, 1014940, 1065687, 1420916, 1522410, 1776145, 2131374, 3044820, 3552290, 4262748, 5328435, 7104580, 10656870, 21313740]

約数ペア:

[(1, 21313740), (2, 10656870), (3, 7104580), (4, 5328435), (5, 4262748), (6, 3552290), (7, 3044820), (10, 2131374), (12, 1776145), (14, 1522410), (15, 1420916), (20, 1065687), (21, 1014940), (28, 761205), (30, 710458), (31, 687540), (35, 608964), (42, 507470), (60, 355229), (62, 343770), (70, 304482), (84, 253735), (93, 229180), (105, 202988), (124, 171885), (140, 152241), (155, 137508), (186, 114590), (210, 101494), (217, 98220), (310, 68754), (372, 57295), (420, 50747), (434, 49110), (465, 45836), (620, 34377), (651, 32740), (868, 24555), (930, 22918), (1085, 19644), (1302, 16370), (1637, 13020), (1860, 11459), (2170, 9822), (2604, 8185), (3255, 6548), (3274, 6510), (4340, 4911)]