21069490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 22113230

約数列:

[1, 2, 5, 10, 13, 26, 41, 59, 65, 67, 82, 118, 130, 134, 205, 295, 335, 410, 533, 590, 670, 767, 871, 1066, 1534, 1742, 2419, 2665, 2747, 3835, 3953, 4355, 4838, 5330, 5494, 7670, 7906, 8710, 12095, 13735, 19765, 24190, 27470, 31447, 35711, 39530, 51389, 62894, 71422, 102778, 157235, 162073, 178555, 256945, 314470, 324146, 357110, 513890, 810365, 1620730, 2106949, 4213898, 10534745, 21069490]

約数ペア:

[(1, 21069490), (2, 10534745), (5, 4213898), (10, 2106949), (13, 1620730), (26, 810365), (41, 513890), (59, 357110), (65, 324146), (67, 314470), (82, 256945), (118, 178555), (130, 162073), (134, 157235), (205, 102778), (295, 71422), (335, 62894), (410, 51389), (533, 39530), (590, 35711), (670, 31447), (767, 27470), (871, 24190), (1066, 19765), (1534, 13735), (1742, 12095), (2419, 8710), (2665, 7906), (2747, 7670), (3835, 5494), (3953, 5330), (4355, 4838)]