135280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:121

約数の個数: 40

約数和(自身を含む): 334800

約数和(自身を除く): 199520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 304, 356, 380, 445, 712, 760, 890, 1424, 1520, 1691, 1780, 3382, 3560, 6764, 7120, 8455, 13528, 16910, 27056, 33820, 67640, 135280]

約数ペア:

[(1, 135280), (2, 67640), (4, 33820), (5, 27056), (8, 16910), (10, 13528), (16, 8455), (19, 7120), (20, 6764), (38, 3560), (40, 3382), (76, 1780), (80, 1691), (89, 1520), (95, 1424), (152, 890), (178, 760), (190, 712), (304, 445), (356, 380)]