20927068

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:502

約数の個数: 36

約数和(自身を含む): 39902632

約数和(自身を除く): 18975564

約数列:

[1, 2, 4, 17, 34, 43, 68, 86, 172, 289, 421, 578, 731, 842, 1156, 1462, 1684, 2924, 7157, 12427, 14314, 18103, 24854, 28628, 36206, 49708, 72412, 121669, 243338, 307751, 486676, 615502, 1231004, 5231767, 10463534, 20927068]

約数ペア:

[(1, 20927068), (2, 10463534), (4, 5231767), (17, 1231004), (34, 615502), (43, 486676), (68, 307751), (86, 243338), (172, 121669), (289, 72412), (421, 49708), (578, 36206), (731, 28628), (842, 24854), (1156, 18103), (1462, 14314), (1684, 12427), (2924, 7157)]