28200725

素因数分解:

$5^2\times 7^2\times {\mathrm{23021}}^1$

素因数の和:23045

約数の個数: 18

約数和(自身を含む): 40679874

約数和(自身を除く): 12479149

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 23021, 115105, 161147, 575525, 805735, 1128029, 4028675, 5640145, 28200725]

約数ペア:

[(1, 28200725), (5, 5640145), (7, 4028675), (25, 1128029), (35, 805735), (49, 575525), (175, 161147), (245, 115105), (1225, 23021)]