161950

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:132

約数の個数: 24

約数和(自身を含む): 312480

約数和(自身を除く): 150530

約数列:

[1, 2, 5, 10, 25, 41, 50, 79, 82, 158, 205, 395, 410, 790, 1025, 1975, 2050, 3239, 3950, 6478, 16195, 32390, 80975, 161950]

約数ペア:

[(1, 161950), (2, 80975), (5, 32390), (10, 16195), (25, 6478), (41, 3950), (50, 3239), (79, 2050), (82, 1975), (158, 1025), (205, 790), (395, 410)]