21303675

素因数分解:

$3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{853}}^1$

素因数の和:909

約数の個数: 48

約数和(自身を含む): 40240480

約数和(自身を除く): 18936805

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 111, 135, 185, 225, 333, 555, 675, 853, 925, 999, 1665, 2559, 2775, 4265, 4995, 7677, 8325, 12795, 21325, 23031, 24975, 31561, 38385, 63975, 94683, 115155, 157805, 191925, 284049, 473415, 575775, 789025, 852147, 1420245, 2367075, 4260735, 7101225, 21303675]

約数ペア:

[(1, 21303675), (3, 7101225), (5, 4260735), (9, 2367075), (15, 1420245), (25, 852147), (27, 789025), (37, 575775), (45, 473415), (75, 284049), (111, 191925), (135, 157805), (185, 115155), (225, 94683), (333, 63975), (555, 38385), (675, 31561), (853, 24975), (925, 23031), (999, 21325), (1665, 12795), (2559, 8325), (2775, 7677), (4265, 4995)]