21582775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1181}}^1$

素因数の和:1251

約数の個数: 24

約数和(自身を含む): 29020464

約数和(自身を除く): 7437689

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1075, 1181, 3655, 5905, 18275, 20077, 29525, 50783, 100385, 253915, 501925, 863311, 1269575, 4316555, 21582775]

約数ペア:

[(1, 21582775), (5, 4316555), (17, 1269575), (25, 863311), (43, 501925), (85, 253915), (215, 100385), (425, 50783), (731, 29525), (1075, 20077), (1181, 18275), (3655, 5905)]