81993615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 149022720

約数和(自身を除く): 67029105

約数列:

[1, 3, 5, 11, 15, 33, 47, 55, 97, 109, 141, 165, 235, 291, 327, 485, 517, 545, 705, 1067, 1199, 1455, 1551, 1635, 2585, 3201, 3597, 4559, 5123, 5335, 5995, 7755, 10573, 13677, 15369, 16005, 17985, 22795, 25615, 31719, 50149, 52865, 56353, 68385, 76845, 116303, 150447, 158595, 169059, 250745, 281765, 348909, 496931, 581515, 752235, 845295, 1490793, 1744545, 2484655, 5466241, 7453965, 16398723, 27331205, 81993615]

約数ペア:

[(1, 81993615), (3, 27331205), (5, 16398723), (11, 7453965), (15, 5466241), (33, 2484655), (47, 1744545), (55, 1490793), (97, 845295), (109, 752235), (141, 581515), (165, 496931), (235, 348909), (291, 281765), (327, 250745), (485, 169059), (517, 158595), (545, 150447), (705, 116303), (1067, 76845), (1199, 68385), (1455, 56353), (1551, 52865), (1635, 50149), (2585, 31719), (3201, 25615), (3597, 22795), (4559, 17985), (5123, 16005), (5335, 15369), (5995, 13677), (7755, 10573)]