21272075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{751}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 29093376

約数和(自身を除く): 7821301

約数列:

[1, 5, 11, 25, 55, 103, 275, 515, 751, 1133, 2575, 3755, 5665, 8261, 18775, 28325, 41305, 77353, 206525, 386765, 850883, 1933825, 4254415, 21272075]

約数ペア:

[(1, 21272075), (5, 4254415), (11, 1933825), (25, 850883), (55, 386765), (103, 206525), (275, 77353), (515, 41305), (751, 28325), (1133, 18775), (2575, 8261), (3755, 5665)]