20431940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24917}}^1$

素因数の和:24967

約数の個数: 24

約数和(自身を含む): 43955352

約数和(自身を除く): 23523412

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 24917, 49834, 99668, 124585, 249170, 498340, 1021597, 2043194, 4086388, 5107985, 10215970, 20431940]

約数ペア:

[(1, 20431940), (2, 10215970), (4, 5107985), (5, 4086388), (10, 2043194), (20, 1021597), (41, 498340), (82, 249170), (164, 124585), (205, 99668), (410, 49834), (820, 24917)]