21353355

素因数分解:

$3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2593}}^1$

素因数の和:2668

約数の個数: 32

約数和(自身を含む): 38598720

約数和(自身を除く): 17245365

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 135, 183, 305, 549, 915, 1647, 2593, 2745, 7779, 8235, 12965, 23337, 38895, 70011, 116685, 158173, 350055, 474519, 790865, 1423557, 2372595, 4270671, 7117785, 21353355]

約数ペア:

[(1, 21353355), (3, 7117785), (5, 4270671), (9, 2372595), (15, 1423557), (27, 790865), (45, 474519), (61, 350055), (135, 158173), (183, 116685), (305, 70011), (549, 38895), (915, 23337), (1647, 12965), (2593, 8235), (2745, 7779)]