21287190

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{30851}}^1$

素因数の和:30884

約数の個数: 32

約数和(自身を含む): 53312256

約数和(自身を除く): 32025066

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 30851, 61702, 92553, 154255, 185106, 308510, 462765, 709573, 925530, 1419146, 2128719, 3547865, 4257438, 7095730, 10643595, 21287190]

約数ペア:

[(1, 21287190), (2, 10643595), (3, 7095730), (5, 4257438), (6, 3547865), (10, 2128719), (15, 1419146), (23, 925530), (30, 709573), (46, 462765), (69, 308510), (115, 185106), (138, 154255), (230, 92553), (345, 61702), (690, 30851)]