21231563

素因数分解:

${\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:298

約数の個数: 16

約数和(自身を含む): 22619520

約数和(自身を除く): 1387957

約数列:

[1, 41, 59, 67, 131, 2419, 2747, 3953, 5371, 7729, 8777, 162073, 316889, 359857, 517843, 21231563]

約数ペア:

[(1, 21231563), (41, 517843), (59, 359857), (67, 316889), (131, 162073), (2419, 8777), (2747, 7729), (3953, 5371)]