81930160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78779}}^1$

素因数の和:78805

約数の個数: 40

約数和(自身を含む): 205143120

約数和(自身を除く): 123212960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 78779, 157558, 315116, 393895, 630232, 787790, 1024127, 1260464, 1575580, 2048254, 3151160, 4096508, 5120635, 6302320, 8193016, 10241270, 16386032, 20482540, 40965080, 81930160]

約数ペア:

[(1, 81930160), (2, 40965080), (4, 20482540), (5, 16386032), (8, 10241270), (10, 8193016), (13, 6302320), (16, 5120635), (20, 4096508), (26, 3151160), (40, 2048254), (52, 1575580), (65, 1260464), (80, 1024127), (104, 787790), (130, 630232), (208, 393895), (260, 315116), (520, 157558), (1040, 78779)]