20312080

素因数分解:

$2^4\times 5^1\times {\mathrm{253901}}^1$

素因数の和:253914

約数の個数: 20

約数和(自身を含む): 47225772

約数和(自身を除く): 26913692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253901, 507802, 1015604, 1269505, 2031208, 2539010, 4062416, 5078020, 10156040, 20312080]

約数ペア:

[(1, 20312080), (2, 10156040), (4, 5078020), (5, 4062416), (8, 2539010), (10, 2031208), (16, 1269505), (20, 1015604), (40, 507802), (80, 253901)]