18817290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{499}}^1$

素因数の和:931

約数の個数: 48

約数和(自身を含む): 49140000

約数和(自身を除く): 30322710

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 419, 499, 838, 998, 1257, 1497, 2095, 2495, 2514, 2994, 3771, 4190, 4491, 4990, 6285, 7485, 7542, 8982, 12570, 14970, 18855, 22455, 37710, 44910, 209081, 418162, 627243, 1045405, 1254486, 1881729, 2090810, 3136215, 3763458, 6272430, 9408645, 18817290]

約数ペア:

[(1, 18817290), (2, 9408645), (3, 6272430), (5, 3763458), (6, 3136215), (9, 2090810), (10, 1881729), (15, 1254486), (18, 1045405), (30, 627243), (45, 418162), (90, 209081), (419, 44910), (499, 37710), (838, 22455), (998, 18855), (1257, 14970), (1497, 12570), (2095, 8982), (2495, 7542), (2514, 7485), (2994, 6285), (3771, 4990), (4190, 4491)]