13215375

素因数分解:

$3^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{691}}^1$

素因数の和:729

約数の個数: 48

約数和(自身を含む): 25260768

約数和(自身を除く): 12045393

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 125, 153, 225, 255, 375, 425, 691, 765, 1125, 1275, 2073, 2125, 3455, 3825, 6219, 6375, 10365, 11747, 17275, 19125, 31095, 35241, 51825, 58735, 86375, 105723, 155475, 176205, 259125, 293675, 528615, 777375, 881025, 1468375, 2643075, 4405125, 13215375]

約数ペア:

[(1, 13215375), (3, 4405125), (5, 2643075), (9, 1468375), (15, 881025), (17, 777375), (25, 528615), (45, 293675), (51, 259125), (75, 176205), (85, 155475), (125, 105723), (153, 86375), (225, 58735), (255, 51825), (375, 35241), (425, 31095), (691, 19125), (765, 17275), (1125, 11747), (1275, 10365), (2073, 6375), (2125, 6219), (3455, 3825)]