856395160

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{211979}}^1$

素因数の和:212091

約数の個数: 32

約数和(自身を含む): 1945976400

約数和(自身を除く): 1089581240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 211979, 423958, 847916, 1059895, 1695832, 2119790, 4239580, 8479160, 21409879, 42819758, 85639516, 107049395, 171279032, 214098790, 428197580, 856395160]

約数ペア:

[(1, 856395160), (2, 428197580), (4, 214098790), (5, 171279032), (8, 107049395), (10, 85639516), (20, 42819758), (40, 21409879), (101, 8479160), (202, 4239580), (404, 2119790), (505, 1695832), (808, 1059895), (1010, 847916), (2020, 423958), (4040, 211979)]