81210440

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{70009}}^1$

素因数の和:70049

約数の個数: 32

約数和(自身を含む): 189027000

約数和(自身を除く): 107816560

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 70009, 140018, 280036, 350045, 560072, 700090, 1400180, 2030261, 2800360, 4060522, 8121044, 10151305, 16242088, 20302610, 40605220, 81210440]

約数ペア:

[(1, 81210440), (2, 40605220), (4, 20302610), (5, 16242088), (8, 10151305), (10, 8121044), (20, 4060522), (29, 2800360), (40, 2030261), (58, 1400180), (116, 700090), (145, 560072), (232, 350045), (290, 280036), (580, 140018), (1160, 70009)]