21000655220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61766633}}^1$

素因数の和:61766659

約数の個数: 24

約数和(自身を含む): 46695575304

約数和(自身を除く): 25694920084

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61766633, 123533266, 247066532, 308833165, 617666330, 1050032761, 1235332660, 2100065522, 4200131044, 5250163805, 10500327610, 21000655220]

約数ペア:

[(1, 21000655220), (2, 10500327610), (4, 5250163805), (5, 4200131044), (10, 2100065522), (17, 1235332660), (20, 1050032761), (34, 617666330), (68, 308833165), (85, 247066532), (170, 123533266), (340, 61766633)]