257723760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{153407}}^1$

素因数の和:153430

約数の個数: 80

約数和(自身を含む): 913084416

約数和(自身を除く): 655360656

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 153407, 306814, 460221, 613628, 767035, 920442, 1073849, 1227256, 1534070, 1840884, 2147698, 2301105, 2454512, 3068140, 3221547, 3681768, 4295396, 4602210, 5369245, 6136280, 6443094, 7363536, 8590792, 9204420, 10738490, 12272560, 12886188, 16107735, 17181584, 18408840, 21476980, 25772376, 32215470, 36817680, 42953960, 51544752, 64430940, 85907920, 128861880, 257723760]

約数ペア:

[(1, 257723760), (2, 128861880), (3, 85907920), (4, 64430940), (5, 51544752), (6, 42953960), (7, 36817680), (8, 32215470), (10, 25772376), (12, 21476980), (14, 18408840), (15, 17181584), (16, 16107735), (20, 12886188), (21, 12272560), (24, 10738490), (28, 9204420), (30, 8590792), (35, 7363536), (40, 6443094), (42, 6136280), (48, 5369245), (56, 4602210), (60, 4295396), (70, 3681768), (80, 3221547), (84, 3068140), (105, 2454512), (112, 2301105), (120, 2147698), (140, 1840884), (168, 1534070), (210, 1227256), (240, 1073849), (280, 920442), (336, 767035), (420, 613628), (560, 460221), (840, 306814), (1680, 153407)]