31988890

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{24419}}^1$

素因数の和:24557

約数の個数: 16

約数和(自身を含む): 58021920

約数和(自身を除く): 26033030

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 24419, 48838, 122095, 244190, 3198889, 6397778, 15994445, 31988890]

約数ペア:

[(1, 31988890), (2, 15994445), (5, 6397778), (10, 3198889), (131, 244190), (262, 122095), (655, 48838), (1310, 24419)]