81137168

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{23369}}^1$

素因数の和:23415

約数の個数: 40

約数和(自身を含む): 185464320

約数和(自身を除く): 104327152

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 217, 248, 434, 496, 868, 1736, 3472, 23369, 46738, 93476, 163583, 186952, 327166, 373904, 654332, 724439, 1308664, 1448878, 2617328, 2897756, 5071073, 5795512, 10142146, 11591024, 20284292, 40568584, 81137168]

約数ペア:

[(1, 81137168), (2, 40568584), (4, 20284292), (7, 11591024), (8, 10142146), (14, 5795512), (16, 5071073), (28, 2897756), (31, 2617328), (56, 1448878), (62, 1308664), (112, 724439), (124, 654332), (217, 373904), (248, 327166), (434, 186952), (496, 163583), (868, 93476), (1736, 46738), (3472, 23369)]