18640960

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4481}}^1$

素因数の和:4511

約数の個数: 56

約数和(自身を含む): 47813976

約数和(自身を除く): 29173016

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4481, 8962, 17924, 22405, 35848, 44810, 58253, 71696, 89620, 116506, 143392, 179240, 233012, 286784, 291265, 358480, 466024, 582530, 716960, 932048, 1165060, 1433920, 1864096, 2330120, 3728192, 4660240, 9320480, 18640960]

約数ペア:

[(1, 18640960), (2, 9320480), (4, 4660240), (5, 3728192), (8, 2330120), (10, 1864096), (13, 1433920), (16, 1165060), (20, 932048), (26, 716960), (32, 582530), (40, 466024), (52, 358480), (64, 291265), (65, 286784), (80, 233012), (104, 179240), (130, 143392), (160, 116506), (208, 89620), (260, 71696), (320, 58253), (416, 44810), (520, 35848), (832, 22405), (1040, 17924), (2080, 8962), (4160, 4481)]