20430585

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{821}}^1$

素因数の和:918

約数の個数: 48

約数和(自身を含む): 41034240

約数和(自身を除く): 20603655

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 79, 105, 237, 315, 395, 553, 711, 821, 1185, 1659, 2463, 2765, 3555, 4105, 4977, 5747, 7389, 8295, 12315, 17241, 24885, 28735, 36945, 51723, 64859, 86205, 194577, 258615, 324295, 454013, 583731, 972885, 1362039, 2270065, 2918655, 4086117, 6810195, 20430585]

約数ペア:

[(1, 20430585), (3, 6810195), (5, 4086117), (7, 2918655), (9, 2270065), (15, 1362039), (21, 972885), (35, 583731), (45, 454013), (63, 324295), (79, 258615), (105, 194577), (237, 86205), (315, 64859), (395, 51723), (553, 36945), (711, 28735), (821, 24885), (1185, 17241), (1659, 12315), (2463, 8295), (2765, 7389), (3555, 5747), (4105, 4977)]