68991280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{45389}}^1$

素因数の和:45421

約数の個数: 40

約数和(自身を含む): 168850800

約数和(自身を除く): 99859520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 45389, 90778, 181556, 226945, 363112, 453890, 726224, 862391, 907780, 1724782, 1815560, 3449564, 3631120, 4311955, 6899128, 8623910, 13798256, 17247820, 34495640, 68991280]

約数ペア:

[(1, 68991280), (2, 34495640), (4, 17247820), (5, 13798256), (8, 8623910), (10, 6899128), (16, 4311955), (19, 3631120), (20, 3449564), (38, 1815560), (40, 1724782), (76, 907780), (80, 862391), (95, 726224), (152, 453890), (190, 363112), (304, 226945), (380, 181556), (760, 90778), (1520, 45389)]