21027735

素因数分解:

$3^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1429}}^1$

素因数の和:1552

約数の個数: 32

約数和(自身を含む): 37752000

約数和(自身を除く): 16724265

約数列:

[1, 3, 5, 9, 15, 27, 45, 109, 135, 327, 545, 981, 1429, 1635, 2943, 4287, 4905, 7145, 12861, 14715, 21435, 38583, 64305, 155761, 192915, 467283, 778805, 1401849, 2336415, 4205547, 7009245, 21027735]

約数ペア:

[(1, 21027735), (3, 7009245), (5, 4205547), (9, 2336415), (15, 1401849), (27, 778805), (45, 467283), (109, 192915), (135, 155761), (327, 64305), (545, 38583), (981, 21435), (1429, 14715), (1635, 12861), (2943, 7145), (4287, 4905)]