18031640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{383}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 26758120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 107, 110, 214, 220, 383, 428, 440, 535, 766, 856, 1070, 1177, 1532, 1915, 2140, 2354, 3064, 3830, 4213, 4280, 4708, 5885, 7660, 8426, 9416, 11770, 15320, 16852, 21065, 23540, 33704, 40981, 42130, 47080, 81962, 84260, 163924, 168520, 204905, 327848, 409810, 450791, 819620, 901582, 1639240, 1803164, 2253955, 3606328, 4507910, 9015820, 18031640]

約数ペア:

[(1, 18031640), (2, 9015820), (4, 4507910), (5, 3606328), (8, 2253955), (10, 1803164), (11, 1639240), (20, 901582), (22, 819620), (40, 450791), (44, 409810), (55, 327848), (88, 204905), (107, 168520), (110, 163924), (214, 84260), (220, 81962), (383, 47080), (428, 42130), (440, 40981), (535, 33704), (766, 23540), (856, 21065), (1070, 16852), (1177, 15320), (1532, 11770), (1915, 9416), (2140, 8426), (2354, 7660), (3064, 5885), (3830, 4708), (4213, 4280)]