31121780

素因数分解:

$2^2\times 5^1\times {\mathrm{983}}^1\times {\mathrm{1583}}^1$

素因数の和:2575

約数の個数: 24

約数和(自身を含む): 65463552

約数和(自身を除く): 34341772

約数列:

[1, 2, 4, 5, 10, 20, 983, 1583, 1966, 3166, 3932, 4915, 6332, 7915, 9830, 15830, 19660, 31660, 1556089, 3112178, 6224356, 7780445, 15560890, 31121780]

約数ペア:

[(1, 31121780), (2, 15560890), (4, 7780445), (5, 6224356), (10, 3112178), (20, 1556089), (983, 31660), (1583, 19660), (1966, 15830), (3166, 9830), (3932, 7915), (4915, 6332)]