12702912440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4019909}}^1$

素因数の和:4019999

約数の個数: 32

約数和(自身を含む): 28943352000

約数和(自身を除く): 16240439560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 4019909, 8039818, 16079636, 20099545, 32159272, 40199090, 80398180, 160796360, 317572811, 635145622, 1270291244, 1587864055, 2540582488, 3175728110, 6351456220, 12702912440]

約数ペア:

[(1, 12702912440), (2, 6351456220), (4, 3175728110), (5, 2540582488), (8, 1587864055), (10, 1270291244), (20, 635145622), (40, 317572811), (79, 160796360), (158, 80398180), (316, 40199090), (395, 32159272), (632, 20099545), (790, 16079636), (1580, 8039818), (3160, 4019909)]