21990330

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1499}}^1$

素因数の和:1675

約数の個数: 48

約数和(自身を含む): 57564000

約数和(自身を除く): 35573670

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 163, 326, 489, 815, 978, 1467, 1499, 1630, 2445, 2934, 2998, 4497, 4890, 7335, 7495, 8994, 13491, 14670, 14990, 22485, 26982, 44970, 67455, 134910, 244337, 488674, 733011, 1221685, 1466022, 2199033, 2443370, 3665055, 4398066, 7330110, 10995165, 21990330]

約数ペア:

[(1, 21990330), (2, 10995165), (3, 7330110), (5, 4398066), (6, 3665055), (9, 2443370), (10, 2199033), (15, 1466022), (18, 1221685), (30, 733011), (45, 488674), (90, 244337), (163, 134910), (326, 67455), (489, 44970), (815, 26982), (978, 22485), (1467, 14990), (1499, 14670), (1630, 13491), (2445, 8994), (2934, 7495), (2998, 7335), (4497, 4890)]