128212040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{1381}}^1$

素因数の和:1614

約数の個数: 64

約数和(自身を含む): 316422720

約数和(自身を除く): 188210680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 211, 220, 422, 440, 844, 1055, 1381, 1688, 2110, 2321, 2762, 4220, 4642, 5524, 6905, 8440, 9284, 11048, 11605, 13810, 15191, 18568, 23210, 27620, 30382, 46420, 55240, 60764, 75955, 92840, 121528, 151910, 291391, 303820, 582782, 607640, 1165564, 1456955, 2331128, 2913910, 3205301, 5827820, 6410602, 11655640, 12821204, 16026505, 25642408, 32053010, 64106020, 128212040]

約数ペア:

[(1, 128212040), (2, 64106020), (4, 32053010), (5, 25642408), (8, 16026505), (10, 12821204), (11, 11655640), (20, 6410602), (22, 5827820), (40, 3205301), (44, 2913910), (55, 2331128), (88, 1456955), (110, 1165564), (211, 607640), (220, 582782), (422, 303820), (440, 291391), (844, 151910), (1055, 121528), (1381, 92840), (1688, 75955), (2110, 60764), (2321, 55240), (2762, 46420), (4220, 30382), (4642, 27620), (5524, 23210), (6905, 18568), (8440, 15191), (9284, 13810), (11048, 11605)]