20090655

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{563}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 38185056

約数和(自身を除く): 18094401

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 61, 65, 117, 183, 195, 305, 549, 563, 585, 793, 915, 1689, 2379, 2745, 2815, 3965, 5067, 7137, 7319, 8445, 11895, 21957, 25335, 34343, 35685, 36595, 65871, 103029, 109785, 171715, 309087, 329355, 446459, 515145, 1339377, 1545435, 2232295, 4018131, 6696885, 20090655]

約数ペア:

[(1, 20090655), (3, 6696885), (5, 4018131), (9, 2232295), (13, 1545435), (15, 1339377), (39, 515145), (45, 446459), (61, 329355), (65, 309087), (117, 171715), (183, 109785), (195, 103029), (305, 65871), (549, 36595), (563, 35685), (585, 34343), (793, 25335), (915, 21957), (1689, 11895), (2379, 8445), (2745, 7319), (2815, 7137), (3965, 5067)]