21215370

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1213}}^1$

素因数の和:1287

約数の個数: 64

約数和(自身を含む): 56640384

約数和(自身を除く): 35425014

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 53, 55, 66, 106, 110, 159, 165, 265, 318, 330, 530, 583, 795, 1166, 1213, 1590, 1749, 2426, 2915, 3498, 3639, 5830, 6065, 7278, 8745, 12130, 13343, 17490, 18195, 26686, 36390, 40029, 64289, 66715, 80058, 128578, 133430, 192867, 200145, 321445, 385734, 400290, 642890, 707179, 964335, 1414358, 1928670, 2121537, 3535895, 4243074, 7071790, 10607685, 21215370]

約数ペア:

[(1, 21215370), (2, 10607685), (3, 7071790), (5, 4243074), (6, 3535895), (10, 2121537), (11, 1928670), (15, 1414358), (22, 964335), (30, 707179), (33, 642890), (53, 400290), (55, 385734), (66, 321445), (106, 200145), (110, 192867), (159, 133430), (165, 128578), (265, 80058), (318, 66715), (330, 64289), (530, 40029), (583, 36390), (795, 26686), (1166, 18195), (1213, 17490), (1590, 13343), (1749, 12130), (2426, 8745), (2915, 7278), (3498, 6065), (3639, 5830)]