21070225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4507}}^1$

素因数の和:4545

約数の個数: 24

約数和(自身を含む): 30185568

約数和(自身を除く): 9115343

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 275, 425, 935, 4507, 4675, 22535, 49577, 76619, 112675, 247885, 383095, 842809, 1239425, 1915475, 4214045, 21070225]

約数ペア:

[(1, 21070225), (5, 4214045), (11, 1915475), (17, 1239425), (25, 842809), (55, 383095), (85, 247885), (187, 112675), (275, 76619), (425, 49577), (935, 22535), (4507, 4675)]