21795910

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{35731}}^1$

素因数の和:35799

約数の個数: 16

約数和(自身を含む): 39876912

約数和(自身を除く): 18081002

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 35731, 71462, 178655, 357310, 2179591, 4359182, 10897955, 21795910]

約数ペア:

[(1, 21795910), (2, 10897955), (5, 4359182), (10, 2179591), (61, 357310), (122, 178655), (305, 71462), (610, 35731)]