6640400

素因数分解:

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

素因数の和:1308

約数の個数: 60

約数和(自身を含む): 17194212

約数和(自身を除く): 10553812

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1277, 1300, 2554, 2600, 5108, 5200, 6385, 10216, 12770, 16601, 20432, 25540, 31925, 33202, 51080, 63850, 66404, 83005, 102160, 127700, 132808, 166010, 255400, 265616, 332020, 415025, 510800, 664040, 830050, 1328080, 1660100, 3320200, 6640400]

約数ペア:

[(1, 6640400), (2, 3320200), (4, 1660100), (5, 1328080), (8, 830050), (10, 664040), (13, 510800), (16, 415025), (20, 332020), (25, 265616), (26, 255400), (40, 166010), (50, 132808), (52, 127700), (65, 102160), (80, 83005), (100, 66404), (104, 63850), (130, 51080), (200, 33202), (208, 31925), (260, 25540), (325, 20432), (400, 16601), (520, 12770), (650, 10216), (1040, 6385), (1277, 5200), (1300, 5108), (2554, 2600)]