87240880

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2221}}^1$

素因数の和:2725

約数の個数: 40

約数和(自身を含む): 203339664

約数和(自身を除く): 116098784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1964, 2221, 2455, 3928, 4442, 4910, 7856, 8884, 9820, 11105, 17768, 19640, 22210, 35536, 39280, 44420, 88840, 177680, 1090511, 2181022, 4362044, 5452555, 8724088, 10905110, 17448176, 21810220, 43620440, 87240880]

約数ペア:

[(1, 87240880), (2, 43620440), (4, 21810220), (5, 17448176), (8, 10905110), (10, 8724088), (16, 5452555), (20, 4362044), (40, 2181022), (80, 1090511), (491, 177680), (982, 88840), (1964, 44420), (2221, 39280), (2455, 35536), (3928, 22210), (4442, 19640), (4910, 17768), (7856, 11105), (8884, 9820)]