285460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2039}}^1$

素因数の和:2055

約数の個数: 24

約数和(自身を含む): 685440

約数和(自身を除く): 399980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2039, 4078, 8156, 10195, 14273, 20390, 28546, 40780, 57092, 71365, 142730, 285460]

約数ペア:

[(1, 285460), (2, 142730), (4, 71365), (5, 57092), (7, 40780), (10, 28546), (14, 20390), (20, 14273), (28, 10195), (35, 8156), (70, 4078), (140, 2039)]