636644450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{821}}^1\times {\mathrm{1193}}^1$

素因数の和:2039

約数の個数: 48

約数和(自身を含む): 1277871336

約数和(自身を除く): 641226886

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 821, 1193, 1642, 2386, 4105, 5965, 8210, 10673, 11930, 15509, 20525, 21346, 29825, 31018, 41050, 53365, 59650, 77545, 106730, 155090, 266825, 387725, 533650, 775450, 979453, 1958906, 4897265, 9794530, 12732889, 24486325, 25465778, 48972650, 63664445, 127328890, 318322225, 636644450]

約数ペア:

[(1, 636644450), (2, 318322225), (5, 127328890), (10, 63664445), (13, 48972650), (25, 25465778), (26, 24486325), (50, 12732889), (65, 9794530), (130, 4897265), (325, 1958906), (650, 979453), (821, 775450), (1193, 533650), (1642, 387725), (2386, 266825), (4105, 155090), (5965, 106730), (8210, 77545), (10673, 59650), (11930, 53365), (15509, 41050), (20525, 31018), (21346, 29825)]