21310984

素因数分解:

$2^3\times {\mathrm{521}}^1\times {\mathrm{5113}}^1$

素因数の和:5640

約数の個数: 16

約数和(自身を含む): 40042620

約数和(自身を除く): 18731636

約数列:

[1, 2, 4, 8, 521, 1042, 2084, 4168, 5113, 10226, 20452, 40904, 2663873, 5327746, 10655492, 21310984]

約数ペア:

[(1, 21310984), (2, 10655492), (4, 5327746), (8, 2663873), (521, 40904), (1042, 20452), (2084, 10226), (4168, 5113)]