428575

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:127

約数の個数: 24

約数和(自身を含む): 634880

約数和(自身を除く): 206305

約数列:

[1, 5, 7, 25, 31, 35, 79, 155, 175, 217, 395, 553, 775, 1085, 1975, 2449, 2765, 5425, 12245, 13825, 17143, 61225, 85715, 428575]

約数ペア:

[(1, 428575), (5, 85715), (7, 61225), (25, 17143), (31, 13825), (35, 12245), (79, 5425), (155, 2765), (175, 2449), (217, 1975), (395, 1085), (553, 775)]