1378640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{907}}^1$

素因数の和:939

約数の個数: 40

約数和(自身を含む): 3377760

約数和(自身を除く): 1999120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 907, 1520, 1814, 3628, 4535, 7256, 9070, 14512, 17233, 18140, 34466, 36280, 68932, 72560, 86165, 137864, 172330, 275728, 344660, 689320, 1378640]

約数ペア:

[(1, 1378640), (2, 689320), (4, 344660), (5, 275728), (8, 172330), (10, 137864), (16, 86165), (19, 72560), (20, 68932), (38, 36280), (40, 34466), (76, 18140), (80, 17233), (95, 14512), (152, 9070), (190, 7256), (304, 4535), (380, 3628), (760, 1814), (907, 1520)]