28172525

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{359}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 36336960

約数和(自身を除く): 8164435

約数列:

[1, 5, 25, 43, 73, 215, 359, 365, 1075, 1795, 1825, 3139, 8975, 15437, 15695, 26207, 77185, 78475, 131035, 385925, 655175, 1126901, 5634505, 28172525]

約数ペア:

[(1, 28172525), (5, 5634505), (25, 1126901), (43, 655175), (73, 385925), (215, 131035), (359, 78475), (365, 77185), (1075, 26207), (1795, 15695), (1825, 15437), (3139, 8975)]