21459928

素因数分解:

$2^3\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2351}}^1$

素因数の和:2527

約数の個数: 32

約数和(自身を含む): 46287360

約数和(自身を除く): 24827432

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 163, 326, 652, 1141, 1304, 2282, 2351, 4564, 4702, 9128, 9404, 16457, 18808, 32914, 65828, 131656, 383213, 766426, 1532852, 2682491, 3065704, 5364982, 10729964, 21459928]

約数ペア:

[(1, 21459928), (2, 10729964), (4, 5364982), (7, 3065704), (8, 2682491), (14, 1532852), (28, 766426), (56, 383213), (163, 131656), (326, 65828), (652, 32914), (1141, 18808), (1304, 16457), (2282, 9404), (2351, 9128), (4564, 4702)]