21576375

素因数分解:

$3^4\times 5^3\times {\mathrm{2131}}^1$

素因数の和:2158

約数の個数: 40

約数和(自身を含む): 40243632

約数和(自身を除く): 18667257

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 2025, 2131, 3375, 6393, 10125, 10655, 19179, 31965, 53275, 57537, 95895, 159825, 172611, 266375, 287685, 479475, 799125, 863055, 1438425, 2397375, 4315275, 7192125, 21576375]

約数ペア:

[(1, 21576375), (3, 7192125), (5, 4315275), (9, 2397375), (15, 1438425), (25, 863055), (27, 799125), (45, 479475), (75, 287685), (81, 266375), (125, 172611), (135, 159825), (225, 95895), (375, 57537), (405, 53275), (675, 31965), (1125, 19179), (2025, 10655), (2131, 10125), (3375, 6393)]