64870280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{16057}}^1$

素因数の和:16169

約数の個数: 32

約数和(自身を含む): 147412440

約数和(自身を除く): 82542160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 16057, 32114, 64228, 80285, 128456, 160570, 321140, 642280, 1621757, 3243514, 6487028, 8108785, 12974056, 16217570, 32435140, 64870280]

約数ペア:

[(1, 64870280), (2, 32435140), (4, 16217570), (5, 12974056), (8, 8108785), (10, 6487028), (20, 3243514), (40, 1621757), (101, 642280), (202, 321140), (404, 160570), (505, 128456), (808, 80285), (1010, 64228), (2020, 32114), (4040, 16057)]