20337040

素因数分解:

$2^4\times 5^1\times {\mathrm{254213}}^1$

素因数の和:254226

約数の個数: 20

約数和(自身を含む): 47283804

約数和(自身を除く): 26946764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254213, 508426, 1016852, 1271065, 2033704, 2542130, 4067408, 5084260, 10168520, 20337040]

約数ペア:

[(1, 20337040), (2, 10168520), (4, 5084260), (5, 4067408), (8, 2542130), (10, 2033704), (16, 1271065), (20, 1016852), (40, 508426), (80, 254213)]