18860420

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6329}}^1$

素因数の和:6487

約数の個数: 24

約数和(自身を含む): 39879000

約数和(自身を除く): 21018580

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6329, 12658, 25316, 31645, 63290, 126580, 943021, 1886042, 3772084, 4715105, 9430210, 18860420]

約数ペア:

[(1, 18860420), (2, 9430210), (4, 4715105), (5, 3772084), (10, 1886042), (20, 943021), (149, 126580), (298, 63290), (596, 31645), (745, 25316), (1490, 12658), (2980, 6329)]