690040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1327}}^1$

素因数の和:1351

約数の個数: 32

約数和(自身を含む): 1673280

約数和(自身を除く): 983240

約数列:

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

約数ペア:

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