21570978

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:871

約数の個数: 64

約数和(自身を含む): 52383744

約数和(自身を除く): 30812766

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 31, 33, 39, 62, 66, 78, 93, 143, 186, 286, 341, 403, 429, 682, 806, 811, 858, 1023, 1209, 1622, 2046, 2418, 2433, 4433, 4866, 8866, 8921, 10543, 13299, 17842, 21086, 25141, 26598, 26763, 31629, 50282, 53526, 63258, 75423, 115973, 150846, 231946, 276551, 326833, 347919, 553102, 653666, 695838, 829653, 980499, 1659306, 1960998, 3595163, 7190326, 10785489, 21570978]

約数ペア:

[(1, 21570978), (2, 10785489), (3, 7190326), (6, 3595163), (11, 1960998), (13, 1659306), (22, 980499), (26, 829653), (31, 695838), (33, 653666), (39, 553102), (62, 347919), (66, 326833), (78, 276551), (93, 231946), (143, 150846), (186, 115973), (286, 75423), (341, 63258), (403, 53526), (429, 50282), (682, 31629), (806, 26763), (811, 26598), (858, 25141), (1023, 21086), (1209, 17842), (1622, 13299), (2046, 10543), (2418, 8921), (2433, 8866), (4433, 4866)]