20977640

素因数分解:

$2^3\times 5^1\times {\mathrm{467}}^1\times {\mathrm{1123}}^1$

素因数の和:1601

約数の個数: 32

約数和(自身を含む): 47342880

約数和(自身を除く): 26365240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 467, 934, 1123, 1868, 2246, 2335, 3736, 4492, 4670, 5615, 8984, 9340, 11230, 18680, 22460, 44920, 524441, 1048882, 2097764, 2622205, 4195528, 5244410, 10488820, 20977640]

約数ペア:

[(1, 20977640), (2, 10488820), (4, 5244410), (5, 4195528), (8, 2622205), (10, 2097764), (20, 1048882), (40, 524441), (467, 44920), (934, 22460), (1123, 18680), (1868, 11230), (2246, 9340), (2335, 8984), (3736, 5615), (4492, 4670)]