78500080

素因数分解:

$2^4\times 5^1\times {\mathrm{659}}^1\times {\mathrm{1489}}^1$

素因数の和:2161

約数の個数: 40

約数和(自身を含む): 182912400

約数和(自身を除く): 104412320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 659, 1318, 1489, 2636, 2978, 3295, 5272, 5956, 6590, 7445, 10544, 11912, 13180, 14890, 23824, 26360, 29780, 52720, 59560, 119120, 981251, 1962502, 3925004, 4906255, 7850008, 9812510, 15700016, 19625020, 39250040, 78500080]

約数ペア:

[(1, 78500080), (2, 39250040), (4, 19625020), (5, 15700016), (8, 9812510), (10, 7850008), (16, 4906255), (20, 3925004), (40, 1962502), (80, 981251), (659, 119120), (1318, 59560), (1489, 52720), (2636, 29780), (2978, 26360), (3295, 23824), (5272, 14890), (5956, 13180), (6590, 11912), (7445, 10544)]