20449910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157307}}^1$

素因数の和:157327

約数の個数: 16

約数和(自身を含む): 39641616

約数和(自身を除く): 19191706

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157307, 314614, 786535, 1573070, 2044991, 4089982, 10224955, 20449910]

約数ペア:

[(1, 20449910), (2, 10224955), (5, 4089982), (10, 2044991), (13, 1573070), (26, 786535), (65, 314614), (130, 157307)]