218218145

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 278691840

約数和(自身を除く): 60473695

約数列:

[1, 5, 31, 71, 79, 155, 251, 355, 395, 1255, 2201, 2449, 5609, 7781, 11005, 12245, 17821, 19829, 28045, 38905, 89105, 99145, 173879, 552451, 614699, 869395, 1407859, 2762255, 3073495, 7039295, 43643629, 218218145]

約数ペア:

[(1, 218218145), (5, 43643629), (31, 7039295), (71, 3073495), (79, 2762255), (155, 1407859), (251, 869395), (355, 614699), (395, 552451), (1255, 173879), (2201, 99145), (2449, 89105), (5609, 38905), (7781, 28045), (11005, 19829), (12245, 17821)]