21301425

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5569}}^1$

素因数の和:5602

約数の個数: 36

約数和(自身を含む): 40404780

約数和(自身を除く): 19103355

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5569, 16707, 27845, 50121, 83535, 94673, 139225, 250605, 284019, 417675, 473365, 852057, 1253025, 1420095, 2366825, 4260285, 7100475, 21301425]

約数ペア:

[(1, 21301425), (3, 7100475), (5, 4260285), (9, 2366825), (15, 1420095), (17, 1253025), (25, 852057), (45, 473365), (51, 417675), (75, 284019), (85, 250605), (153, 139225), (225, 94673), (255, 83535), (425, 50121), (765, 27845), (1275, 16707), (3825, 5569)]