20312720

素因数分解:

$2^4\times 5^1\times {\mathrm{253909}}^1$

素因数の和:253922

約数の個数: 20

約数和(自身を含む): 47227260

約数和(自身を除く): 26914540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253909, 507818, 1015636, 1269545, 2031272, 2539090, 4062544, 5078180, 10156360, 20312720]

約数ペア:

[(1, 20312720), (2, 10156360), (4, 5078180), (5, 4062544), (8, 2539090), (10, 2031272), (16, 1269545), (20, 1015636), (40, 507818), (80, 253909)]