77971960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{177209}}^1$

素因数の和:177231

約数の個数: 32

約数和(自身を含む): 191386800

約数和(自身を除く): 113414840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 177209, 354418, 708836, 886045, 1417672, 1772090, 1949299, 3544180, 3898598, 7088360, 7797196, 9746495, 15594392, 19492990, 38985980, 77971960]

約数ペア:

[(1, 77971960), (2, 38985980), (4, 19492990), (5, 15594392), (8, 9746495), (10, 7797196), (11, 7088360), (20, 3898598), (22, 3544180), (40, 1949299), (44, 1772090), (55, 1417672), (88, 886045), (110, 708836), (220, 354418), (440, 177209)]