20839275

素因数分解:

$3^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:314

約数の個数: 60

約数和(自身を含む): 39700584

約数和(自身を除く): 18861309

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 81, 123, 135, 205, 225, 251, 369, 405, 615, 675, 753, 1025, 1107, 1255, 1845, 2025, 2259, 3075, 3321, 3765, 5535, 6275, 6777, 9225, 10291, 11295, 16605, 18825, 20331, 27675, 30873, 33885, 51455, 56475, 83025, 92619, 101655, 154365, 169425, 257275, 277857, 463095, 508275, 771825, 833571, 1389285, 2315475, 4167855, 6946425, 20839275]

約数ペア:

[(1, 20839275), (3, 6946425), (5, 4167855), (9, 2315475), (15, 1389285), (25, 833571), (27, 771825), (41, 508275), (45, 463095), (75, 277857), (81, 257275), (123, 169425), (135, 154365), (205, 101655), (225, 92619), (251, 83025), (369, 56475), (405, 51455), (615, 33885), (675, 30873), (753, 27675), (1025, 20331), (1107, 18825), (1255, 16605), (1845, 11295), (2025, 10291), (2259, 9225), (3075, 6777), (3321, 6275), (3765, 5535)]