261293320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{3863}}^1$

素因数の和:3982

約数の個数: 64

約数和(自身を含む): 625968000

約数和(自身を除く): 364674680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 356, 380, 445, 712, 760, 890, 1691, 1780, 3382, 3560, 3863, 6764, 7726, 8455, 13528, 15452, 16910, 19315, 30904, 33820, 38630, 67640, 73397, 77260, 146794, 154520, 293588, 343807, 366985, 587176, 687614, 733970, 1375228, 1467940, 1719035, 2750456, 2935880, 3438070, 6532333, 6876140, 13064666, 13752280, 26129332, 32661665, 52258664, 65323330, 130646660, 261293320]

約数ペア:

[(1, 261293320), (2, 130646660), (4, 65323330), (5, 52258664), (8, 32661665), (10, 26129332), (19, 13752280), (20, 13064666), (38, 6876140), (40, 6532333), (76, 3438070), (89, 2935880), (95, 2750456), (152, 1719035), (178, 1467940), (190, 1375228), (356, 733970), (380, 687614), (445, 587176), (712, 366985), (760, 343807), (890, 293588), (1691, 154520), (1780, 146794), (3382, 77260), (3560, 73397), (3863, 67640), (6764, 38630), (7726, 33820), (8455, 30904), (13528, 19315), (15452, 16910)]