1380080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1327}}^1$

素因数の和:1353

約数の個数: 40

約数和(自身を含む): 3458112

約数和(自身を除く): 2078032

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1327, 2654, 5308, 6635, 10616, 13270, 17251, 21232, 26540, 34502, 53080, 69004, 86255, 106160, 138008, 172510, 276016, 345020, 690040, 1380080]

約数ペア:

[(1, 1380080), (2, 690040), (4, 345020), (5, 276016), (8, 172510), (10, 138008), (13, 106160), (16, 86255), (20, 69004), (26, 53080), (40, 34502), (52, 26540), (65, 21232), (80, 17251), (104, 13270), (130, 10616), (208, 6635), (260, 5308), (520, 2654), (1040, 1327)]