81403760

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:402

約数の個数: 80

約数和(自身を含む): 196219584

約数和(自身を除く): 114815824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 73, 80, 106, 146, 212, 263, 265, 292, 365, 424, 526, 530, 584, 730, 848, 1052, 1060, 1168, 1315, 1460, 2104, 2120, 2630, 2920, 3869, 4208, 4240, 5260, 5840, 7738, 10520, 13939, 15476, 19199, 19345, 21040, 27878, 30952, 38398, 38690, 55756, 61904, 69695, 76796, 77380, 95995, 111512, 139390, 153592, 154760, 191990, 223024, 278780, 307184, 309520, 383980, 557560, 767960, 1017547, 1115120, 1535920, 2035094, 4070188, 5087735, 8140376, 10175470, 16280752, 20350940, 40701880, 81403760]

約数ペア:

[(1, 81403760), (2, 40701880), (4, 20350940), (5, 16280752), (8, 10175470), (10, 8140376), (16, 5087735), (20, 4070188), (40, 2035094), (53, 1535920), (73, 1115120), (80, 1017547), (106, 767960), (146, 557560), (212, 383980), (263, 309520), (265, 307184), (292, 278780), (365, 223024), (424, 191990), (526, 154760), (530, 153592), (584, 139390), (730, 111512), (848, 95995), (1052, 77380), (1060, 76796), (1168, 69695), (1315, 61904), (1460, 55756), (2104, 38690), (2120, 38398), (2630, 30952), (2920, 27878), (3869, 21040), (4208, 19345), (4240, 19199), (5260, 15476), (5840, 13939), (7738, 10520)]