18720881205

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{241}}^1\times {\mathrm{30643}}^1$

素因数の和:30918

約数の個数: 48

約数和(自身を含む): 32570404416

約数和(自身を除く): 13849523211

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 241, 507, 723, 845, 1205, 2535, 3133, 3615, 9399, 15665, 30643, 40729, 46995, 91929, 122187, 153215, 203645, 398359, 459645, 610935, 1195077, 1991795, 5178667, 5975385, 7384963, 15536001, 22154889, 25893335, 36924815, 77680005, 96004519, 110774445, 288013557, 480022595, 1248058747, 1440067785, 3744176241, 6240293735, 18720881205]

約数ペア:

[(1, 18720881205), (3, 6240293735), (5, 3744176241), (13, 1440067785), (15, 1248058747), (39, 480022595), (65, 288013557), (169, 110774445), (195, 96004519), (241, 77680005), (507, 36924815), (723, 25893335), (845, 22154889), (1205, 15536001), (2535, 7384963), (3133, 5975385), (3615, 5178667), (9399, 1991795), (15665, 1195077), (30643, 610935), (40729, 459645), (46995, 398359), (91929, 203645), (122187, 153215)]