1287750480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{21377}}^1$

素因数の和:21644

約数の個数: 80

約数和(自身を含む): 4008118464

約数和(自身を除く): 2720367984

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 251, 502, 753, 1004, 1255, 1506, 2008, 2510, 3012, 3765, 4016, 5020, 6024, 7530, 10040, 12048, 15060, 20080, 21377, 30120, 42754, 60240, 64131, 85508, 106885, 128262, 171016, 213770, 256524, 320655, 342032, 427540, 513048, 641310, 855080, 1026096, 1282620, 1710160, 2565240, 5130480, 5365627, 10731254, 16096881, 21462508, 26828135, 32193762, 42925016, 53656270, 64387524, 80484405, 85850032, 107312540, 128775048, 160968810, 214625080, 257550096, 321937620, 429250160, 643875240, 1287750480]

約数ペア:

[(1, 1287750480), (2, 643875240), (3, 429250160), (4, 321937620), (5, 257550096), (6, 214625080), (8, 160968810), (10, 128775048), (12, 107312540), (15, 85850032), (16, 80484405), (20, 64387524), (24, 53656270), (30, 42925016), (40, 32193762), (48, 26828135), (60, 21462508), (80, 16096881), (120, 10731254), (240, 5365627), (251, 5130480), (502, 2565240), (753, 1710160), (1004, 1282620), (1255, 1026096), (1506, 855080), (2008, 641310), (2510, 513048), (3012, 427540), (3765, 342032), (4016, 320655), (5020, 256524), (6024, 213770), (7530, 171016), (10040, 128262), (12048, 106885), (15060, 85508), (20080, 64131), (21377, 60240), (30120, 42754)]