20209995

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{193}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 38132640

約数和(自身を除く): 17922645

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 179, 193, 195, 537, 579, 585, 895, 965, 1611, 1737, 2327, 2509, 2685, 2895, 6981, 7527, 8055, 8685, 11635, 12545, 20943, 22581, 34547, 34905, 37635, 103641, 104715, 112905, 172735, 310923, 449111, 518205, 1347333, 1554615, 2245555, 4041999, 6736665, 20209995]

約数ペア:

[(1, 20209995), (3, 6736665), (5, 4041999), (9, 2245555), (13, 1554615), (15, 1347333), (39, 518205), (45, 449111), (65, 310923), (117, 172735), (179, 112905), (193, 104715), (195, 103641), (537, 37635), (579, 34905), (585, 34547), (895, 22581), (965, 20943), (1611, 12545), (1737, 11635), (2327, 8685), (2509, 8055), (2685, 7527), (2895, 6981)]