21537724

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1733}}^1$

素因数の和:1989

約数の個数: 24

約数和(自身を含む): 40783680

約数和(自身を除く): 19245956

約数列:

[1, 2, 4, 13, 26, 52, 239, 478, 956, 1733, 3107, 3466, 6214, 6932, 12428, 22529, 45058, 90116, 414187, 828374, 1656748, 5384431, 10768862, 21537724]

約数ペア:

[(1, 21537724), (2, 10768862), (4, 5384431), (13, 1656748), (26, 828374), (52, 414187), (239, 90116), (478, 45058), (956, 22529), (1733, 12428), (3107, 6932), (3466, 6214)]