20131145

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^2\times {\mathrm{173}}^1$

素因数の和:269

約数の個数: 24

約数和(自身を含む): 26440344

約数和(自身を除く): 6309199

約数列:

[1, 5, 17, 37, 85, 173, 185, 629, 865, 1369, 2941, 3145, 6401, 6845, 14705, 23273, 32005, 108817, 116365, 236837, 544085, 1184185, 4026229, 20131145]

約数ペア:

[(1, 20131145), (5, 4026229), (17, 1184185), (37, 544085), (85, 236837), (173, 116365), (185, 108817), (629, 32005), (865, 23273), (1369, 14705), (2941, 6845), (3145, 6401)]