991450

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:342

約数の個数: 24

約数和(自身を含む): 1874880

約数和(自身を除く): 883430

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 251, 395, 502, 790, 1255, 1975, 2510, 3950, 6275, 12550, 19829, 39658, 99145, 198290, 495725, 991450]

約数ペア:

[(1, 991450), (2, 495725), (5, 198290), (10, 99145), (25, 39658), (50, 19829), (79, 12550), (158, 6275), (251, 3950), (395, 2510), (502, 1975), (790, 1255)]