317620796

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{219959}}^1$

素因数の和:220001

約数の個数: 18

約数和(自身を含む): 586633320

約数和(自身を除く): 269012524

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 219959, 439918, 879836, 4179221, 8358442, 16716884, 79405199, 158810398, 317620796]

約数ペア:

[(1, 317620796), (2, 158810398), (4, 79405199), (19, 16716884), (38, 8358442), (76, 4179221), (361, 879836), (722, 439918), (1444, 219959)]