78574280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:534

約数の個数: 64

約数和(自身を含む): 182217600

約数和(自身を除く): 103643320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 73, 142, 146, 284, 292, 355, 365, 379, 568, 584, 710, 730, 758, 1420, 1460, 1516, 1895, 2840, 2920, 3032, 3790, 5183, 7580, 10366, 15160, 20732, 25915, 26909, 27667, 41464, 51830, 53818, 55334, 103660, 107636, 110668, 134545, 138335, 207320, 215272, 221336, 269090, 276670, 538180, 553340, 1076360, 1106680, 1964357, 3928714, 7857428, 9821785, 15714856, 19643570, 39287140, 78574280]

約数ペア:

[(1, 78574280), (2, 39287140), (4, 19643570), (5, 15714856), (8, 9821785), (10, 7857428), (20, 3928714), (40, 1964357), (71, 1106680), (73, 1076360), (142, 553340), (146, 538180), (284, 276670), (292, 269090), (355, 221336), (365, 215272), (379, 207320), (568, 138335), (584, 134545), (710, 110668), (730, 107636), (758, 103660), (1420, 55334), (1460, 53818), (1516, 51830), (1895, 41464), (2840, 27667), (2920, 26909), (3032, 25915), (3790, 20732), (5183, 15160), (7580, 10366)]