21008702

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 40824000

約数和(自身を除く): 19815298

約数列:

[1, 2, 11, 13, 17, 22, 26, 29, 34, 58, 143, 149, 187, 221, 286, 298, 319, 374, 377, 442, 493, 638, 754, 986, 1639, 1937, 2431, 2533, 3278, 3874, 4147, 4321, 4862, 5066, 5423, 6409, 8294, 8642, 10846, 12818, 21307, 27863, 32929, 42614, 47531, 55726, 56173, 65858, 70499, 73457, 95062, 112346, 140998, 146914, 362219, 617903, 724438, 808027, 954941, 1235806, 1616054, 1909882, 10504351, 21008702]

約数ペア:

[(1, 21008702), (2, 10504351), (11, 1909882), (13, 1616054), (17, 1235806), (22, 954941), (26, 808027), (29, 724438), (34, 617903), (58, 362219), (143, 146914), (149, 140998), (187, 112346), (221, 95062), (286, 73457), (298, 70499), (319, 65858), (374, 56173), (377, 55726), (442, 47531), (493, 42614), (638, 32929), (754, 27863), (986, 21307), (1639, 12818), (1937, 10846), (2431, 8642), (2533, 8294), (3278, 6409), (3874, 5423), (4147, 5066), (4321, 4862)]