128568220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{8231}}^1$

素因数の和:8322

約数の個数: 48

約数和(自身を含む): 298722816

約数和(自身を除く): 170154596

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3905, 7810, 8231, 15620, 16462, 32924, 41155, 82310, 90541, 164620, 181082, 362164, 452705, 584401, 905410, 1168802, 1810820, 2337604, 2922005, 5844010, 6428411, 11688020, 12856822, 25713644, 32142055, 64284110, 128568220]

約数ペア:

[(1, 128568220), (2, 64284110), (4, 32142055), (5, 25713644), (10, 12856822), (11, 11688020), (20, 6428411), (22, 5844010), (44, 2922005), (55, 2337604), (71, 1810820), (110, 1168802), (142, 905410), (220, 584401), (284, 452705), (355, 362164), (710, 181082), (781, 164620), (1420, 90541), (1562, 82310), (3124, 41155), (3905, 32924), (7810, 16462), (8231, 15620)]