20509190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1997}}^1$

素因数の和:2096

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19770490

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 1997, 2054, 3994, 5135, 9985, 10270, 19970, 25961, 51922, 129805, 157763, 259610, 315526, 788815, 1577630, 2050919, 4101838, 10254595, 20509190]

約数ペア:

[(1, 20509190), (2, 10254595), (5, 4101838), (10, 2050919), (13, 1577630), (26, 788815), (65, 315526), (79, 259610), (130, 157763), (158, 129805), (395, 51922), (790, 25961), (1027, 19970), (1997, 10270), (2054, 9985), (3994, 5135)]