128520730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{31891}}^1$

素因数の和:31942

約数の個数: 32

約数和(自身を含む): 257177088

約数和(自身を除く): 128656358

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 31891, 63782, 159455, 318910, 414583, 829166, 988621, 1977242, 2072915, 4145830, 4943105, 9886210, 12852073, 25704146, 64260365, 128520730]

約数ペア:

[(1, 128520730), (2, 64260365), (5, 25704146), (10, 12852073), (13, 9886210), (26, 4943105), (31, 4145830), (62, 2072915), (65, 1977242), (130, 988621), (155, 829166), (310, 414583), (403, 318910), (806, 159455), (2015, 63782), (4030, 31891)]