7648940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 18200448

約数和(自身を除く): 10551508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 73, 124, 130, 146, 155, 169, 260, 292, 310, 338, 365, 403, 620, 676, 730, 806, 845, 949, 1460, 1612, 1690, 1898, 2015, 2263, 3380, 3796, 4030, 4526, 4745, 5239, 8060, 9052, 9490, 10478, 11315, 12337, 18980, 20956, 22630, 24674, 26195, 29419, 45260, 49348, 52390, 58838, 61685, 104780, 117676, 123370, 147095, 246740, 294190, 382447, 588380, 764894, 1529788, 1912235, 3824470, 7648940]

約数ペア:

[(1, 7648940), (2, 3824470), (4, 1912235), (5, 1529788), (10, 764894), (13, 588380), (20, 382447), (26, 294190), (31, 246740), (52, 147095), (62, 123370), (65, 117676), (73, 104780), (124, 61685), (130, 58838), (146, 52390), (155, 49348), (169, 45260), (260, 29419), (292, 26195), (310, 24674), (338, 22630), (365, 20956), (403, 18980), (620, 12337), (676, 11315), (730, 10478), (806, 9490), (845, 9052), (949, 8060), (1460, 5239), (1612, 4745), (1690, 4526), (1898, 4030), (2015, 3796), (2263, 3380)]