21729550

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{6121}}^1$

素因数の和:6204

約数の個数: 24

約数和(自身を含む): 40992912

約数和(自身を除く): 19263362

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 6121, 12242, 30605, 61210, 153025, 306050, 434591, 869182, 2172955, 4345910, 10864775, 21729550]

約数ペア:

[(1, 21729550), (2, 10864775), (5, 4345910), (10, 2172955), (25, 869182), (50, 434591), (71, 306050), (142, 153025), (355, 61210), (710, 30605), (1775, 12242), (3550, 6121)]