81440928

素因数分解:

$2^5\times 3^2\times {\mathrm{83}}^1\times {\mathrm{3407}}^1$

素因数の和:3506

約数の個数: 72

約数和(自身を含む): 234456768

約数和(自身を除く): 153015840

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 83, 96, 144, 166, 249, 288, 332, 498, 664, 747, 996, 1328, 1494, 1992, 2656, 2988, 3407, 3984, 5976, 6814, 7968, 10221, 11952, 13628, 20442, 23904, 27256, 30663, 40884, 54512, 61326, 81768, 109024, 122652, 163536, 245304, 282781, 327072, 490608, 565562, 848343, 981216, 1131124, 1696686, 2262248, 2545029, 3393372, 4524496, 5090058, 6786744, 9048992, 10180116, 13573488, 20360232, 27146976, 40720464, 81440928]

約数ペア:

[(1, 81440928), (2, 40720464), (3, 27146976), (4, 20360232), (6, 13573488), (8, 10180116), (9, 9048992), (12, 6786744), (16, 5090058), (18, 4524496), (24, 3393372), (32, 2545029), (36, 2262248), (48, 1696686), (72, 1131124), (83, 981216), (96, 848343), (144, 565562), (166, 490608), (249, 327072), (288, 282781), (332, 245304), (498, 163536), (664, 122652), (747, 109024), (996, 81768), (1328, 61326), (1494, 54512), (1992, 40884), (2656, 30663), (2988, 27256), (3407, 23904), (3984, 20442), (5976, 13628), (6814, 11952), (7968, 10221)]