257640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1$

素因数の和:146

約数の個数: 64

約数和(自身を含む): 820800

約数和(自身を除く): 563160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 113, 114, 120, 152, 190, 226, 228, 285, 339, 380, 452, 456, 565, 570, 678, 760, 904, 1130, 1140, 1356, 1695, 2147, 2260, 2280, 2712, 3390, 4294, 4520, 6441, 6780, 8588, 10735, 12882, 13560, 17176, 21470, 25764, 32205, 42940, 51528, 64410, 85880, 128820, 257640]

約数ペア:

[(1, 257640), (2, 128820), (3, 85880), (4, 64410), (5, 51528), (6, 42940), (8, 32205), (10, 25764), (12, 21470), (15, 17176), (19, 13560), (20, 12882), (24, 10735), (30, 8588), (38, 6780), (40, 6441), (57, 4520), (60, 4294), (76, 3390), (95, 2712), (113, 2280), (114, 2260), (120, 2147), (152, 1695), (190, 1356), (226, 1140), (228, 1130), (285, 904), (339, 760), (380, 678), (452, 570), (456, 565)]