21347360

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1321}}^1$

素因数の和:1437

約数の個数: 48

約数和(自身を含む): 50971032

約数和(自身を除く): 29623672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1321, 1616, 2020, 2642, 3232, 4040, 5284, 6605, 8080, 10568, 13210, 16160, 21136, 26420, 42272, 52840, 105680, 133421, 211360, 266842, 533684, 667105, 1067368, 1334210, 2134736, 2668420, 4269472, 5336840, 10673680, 21347360]

約数ペア:

[(1, 21347360), (2, 10673680), (4, 5336840), (5, 4269472), (8, 2668420), (10, 2134736), (16, 1334210), (20, 1067368), (32, 667105), (40, 533684), (80, 266842), (101, 211360), (160, 133421), (202, 105680), (404, 52840), (505, 42272), (808, 26420), (1010, 21136), (1321, 16160), (1616, 13210), (2020, 10568), (2642, 8080), (3232, 6605), (4040, 5284)]