20559940

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5743}}^1$

素因数の和:5931

約数の個数: 24

約数和(自身を含む): 43424640

約数和(自身を除く): 22864700

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5743, 11486, 22972, 28715, 57430, 114860, 1027997, 2055994, 4111988, 5139985, 10279970, 20559940]

約数ペア:

[(1, 20559940), (2, 10279970), (4, 5139985), (5, 4111988), (10, 2055994), (20, 1027997), (179, 114860), (358, 57430), (716, 28715), (895, 22972), (1790, 11486), (3580, 5743)]