21310155

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3671}}^1$

素因数の和:3728

約数の個数: 32

約数和(自身を含む): 38776320

約数和(自身を除く): 17466165

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3671, 5805, 11013, 18355, 33039, 55065, 99117, 157853, 165195, 473559, 495585, 789265, 1420677, 2367795, 4262031, 7103385, 21310155]

約数ペア:

[(1, 21310155), (3, 7103385), (5, 4262031), (9, 2367795), (15, 1420677), (27, 789265), (43, 495585), (45, 473559), (129, 165195), (135, 157853), (215, 99117), (387, 55065), (645, 33039), (1161, 18355), (1935, 11013), (3671, 5805)]