20449845

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2689}}^1$

素因数の和:2726

約数の個数: 36

約数和(自身を含む): 38397060

約数和(自身を除く): 17947215

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 169, 195, 507, 585, 845, 1521, 2535, 2689, 7605, 8067, 13445, 24201, 34957, 40335, 104871, 121005, 174785, 314613, 454441, 524355, 1363323, 1573065, 2272205, 4089969, 6816615, 20449845]

約数ペア:

[(1, 20449845), (3, 6816615), (5, 4089969), (9, 2272205), (13, 1573065), (15, 1363323), (39, 524355), (45, 454441), (65, 314613), (117, 174785), (169, 121005), (195, 104871), (507, 40335), (585, 34957), (845, 24201), (1521, 13445), (2535, 8067), (2689, 7605)]