20697573

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^2$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 30505888

約数和(自身を除く): 9808315

約数列:

[1, 3, 13, 39, 67, 89, 201, 267, 871, 1157, 2613, 3471, 5963, 7921, 17889, 23763, 77519, 102973, 232557, 308919, 530707, 1592121, 6899191, 20697573]

約数ペア:

[(1, 20697573), (3, 6899191), (13, 1592121), (39, 530707), (67, 308919), (89, 232557), (201, 102973), (267, 77519), (871, 23763), (1157, 17889), (2613, 7921), (3471, 5963)]