20021480

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1847}}^1$

素因数の和:2129

約数の個数: 32

約数和(自身を含む): 45239040

約数和(自身を除く): 25217560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 1847, 2168, 2710, 3694, 5420, 7388, 9235, 10840, 14776, 18470, 36940, 73880, 500537, 1001074, 2002148, 2502685, 4004296, 5005370, 10010740, 20021480]

約数ペア:

[(1, 20021480), (2, 10010740), (4, 5005370), (5, 4004296), (8, 2502685), (10, 2002148), (20, 1001074), (40, 500537), (271, 73880), (542, 36940), (1084, 18470), (1355, 14776), (1847, 10840), (2168, 9235), (2710, 7388), (3694, 5420)]