1328080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1277}}^1$

素因数の和:1303

約数の個数: 40

約数和(自身を含む): 3327912

約数和(自身を除く): 1999832

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1277, 2554, 5108, 6385, 10216, 12770, 16601, 20432, 25540, 33202, 51080, 66404, 83005, 102160, 132808, 166010, 265616, 332020, 664040, 1328080]

約数ペア:

[(1, 1328080), (2, 664040), (4, 332020), (5, 265616), (8, 166010), (10, 132808), (13, 102160), (16, 83005), (20, 66404), (26, 51080), (40, 33202), (52, 25540), (65, 20432), (80, 16601), (104, 12770), (130, 10216), (208, 6385), (260, 5108), (520, 2554), (1040, 1277)]