31381040

素因数分解:

$2^4\times 5^1\times {\mathrm{392263}}^1$

素因数の和:392276

約数の個数: 20

約数和(自身を含む): 72961104

約数和(自身を除く): 41580064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392263, 784526, 1569052, 1961315, 3138104, 3922630, 6276208, 7845260, 15690520, 31381040]

約数ペア:

[(1, 31381040), (2, 15690520), (4, 7845260), (5, 6276208), (8, 3922630), (10, 3138104), (16, 1961315), (20, 1569052), (40, 784526), (80, 392263)]