20724885

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17014635

約数列:

[1, 3, 5, 9, 15, 41, 45, 47, 123, 141, 205, 235, 239, 369, 423, 615, 705, 717, 1195, 1845, 1927, 2115, 2151, 3585, 5781, 9635, 9799, 10755, 11233, 17343, 28905, 29397, 33699, 48995, 56165, 86715, 88191, 101097, 146985, 168495, 440955, 460553, 505485, 1381659, 2302765, 4144977, 6908295, 20724885]

約数ペア:

[(1, 20724885), (3, 6908295), (5, 4144977), (9, 2302765), (15, 1381659), (41, 505485), (45, 460553), (47, 440955), (123, 168495), (141, 146985), (205, 101097), (235, 88191), (239, 86715), (369, 56165), (423, 48995), (615, 33699), (705, 29397), (717, 28905), (1195, 17343), (1845, 11233), (1927, 10755), (2115, 9799), (2151, 9635), (3585, 5781)]