21000435472

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{409}}^1\times {\mathrm{68279}}^1$

素因数の和:68743

約数の個数: 40

約数和(自身を含む): 41656262400

約数和(自身を除く): 20655826928

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 409, 752, 818, 1636, 3272, 6544, 19223, 38446, 68279, 76892, 136558, 153784, 273116, 307568, 546232, 1092464, 3209113, 6418226, 12836452, 25672904, 27926111, 51345808, 55852222, 111704444, 223408888, 446817776, 1312527217, 2625054434, 5250108868, 10500217736, 21000435472]

約数ペア:

[(1, 21000435472), (2, 10500217736), (4, 5250108868), (8, 2625054434), (16, 1312527217), (47, 446817776), (94, 223408888), (188, 111704444), (376, 55852222), (409, 51345808), (752, 27926111), (818, 25672904), (1636, 12836452), (3272, 6418226), (6544, 3209113), (19223, 1092464), (38446, 546232), (68279, 307568), (76892, 273116), (136558, 153784)]