20729745

素因数分解:

$3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4561}}^1$

素因数の和:4673

約数の個数: 24

約数和(自身を含む): 36295272

約数和(自身を除く): 15565527

約数列:

[1, 3, 5, 9, 15, 45, 101, 303, 505, 909, 1515, 4545, 4561, 13683, 22805, 41049, 68415, 205245, 460661, 1381983, 2303305, 4145949, 6909915, 20729745]

約数ペア:

[(1, 20729745), (3, 6909915), (5, 4145949), (9, 2303305), (15, 1381983), (45, 460661), (101, 205245), (303, 68415), (505, 41049), (909, 22805), (1515, 13683), (4545, 4561)]