20472495

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:535

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 13534545

約数列:

[1, 3, 5, 15, 47, 71, 141, 213, 235, 355, 409, 705, 1065, 1227, 2045, 3337, 6135, 10011, 16685, 19223, 29039, 50055, 57669, 87117, 96115, 145195, 288345, 435585, 1364833, 4094499, 6824165, 20472495]

約数ペア:

[(1, 20472495), (3, 6824165), (5, 4094499), (15, 1364833), (47, 435585), (71, 288345), (141, 145195), (213, 96115), (235, 87117), (355, 57669), (409, 50055), (705, 29039), (1065, 19223), (1227, 16685), (2045, 10011), (3337, 6135)]