28780455640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1901}}^1\times {\mathrm{8053}}^1$

素因数の和:10012

約数の個数: 64

約数和(自身を含む): 66176818560

約数和(自身を除く): 37396362920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 1901, 3802, 7604, 8053, 9505, 15208, 16106, 19010, 32212, 38020, 40265, 64424, 76040, 80530, 89347, 161060, 178694, 322120, 357388, 378491, 446735, 714776, 756982, 893470, 1513964, 1786940, 1892455, 3027928, 3573880, 3784910, 7569820, 15139640, 15308753, 30617506, 61235012, 76543765, 122470024, 153087530, 306175060, 612350120, 719511391, 1439022782, 2878045564, 3597556955, 5756091128, 7195113910, 14390227820, 28780455640]

約数ペア:

[(1, 28780455640), (2, 14390227820), (4, 7195113910), (5, 5756091128), (8, 3597556955), (10, 2878045564), (20, 1439022782), (40, 719511391), (47, 612350120), (94, 306175060), (188, 153087530), (235, 122470024), (376, 76543765), (470, 61235012), (940, 30617506), (1880, 15308753), (1901, 15139640), (3802, 7569820), (7604, 3784910), (8053, 3573880), (9505, 3027928), (15208, 1892455), (16106, 1786940), (19010, 1513964), (32212, 893470), (38020, 756982), (40265, 714776), (64424, 446735), (76040, 378491), (80530, 357388), (89347, 322120), (161060, 178694)]