20814955

素因数分解:

$5^1\times 7^3\times {\mathrm{53}}^1\times {\mathrm{229}}^1$

素因数の和:308

約数の個数: 32

約数和(自身を含む): 29808000

約数和(自身を除く): 8993045

約数列:

[1, 5, 7, 35, 49, 53, 229, 245, 265, 343, 371, 1145, 1603, 1715, 1855, 2597, 8015, 11221, 12137, 12985, 18179, 56105, 60685, 78547, 84959, 90895, 392735, 424795, 594713, 2973565, 4162991, 20814955]

約数ペア:

[(1, 20814955), (5, 4162991), (7, 2973565), (35, 594713), (49, 424795), (53, 392735), (229, 90895), (245, 84959), (265, 78547), (343, 60685), (371, 56105), (1145, 18179), (1603, 12985), (1715, 12137), (1855, 11221), (2597, 8015)]