678760

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 1555200

約数和(自身を除く): 876440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 239, 284, 355, 478, 568, 710, 956, 1195, 1420, 1912, 2390, 2840, 4780, 9560, 16969, 33938, 67876, 84845, 135752, 169690, 339380, 678760]

約数ペア:

[(1, 678760), (2, 339380), (4, 169690), (5, 135752), (8, 84845), (10, 67876), (20, 33938), (40, 16969), (71, 9560), (142, 4780), (239, 2840), (284, 2390), (355, 1912), (478, 1420), (568, 1195), (710, 956)]