256768470

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1129}}^1$

素因数の和:1187

約数の個数: 144

約数和(自身を含む): 805952160

約数和(自身を除く): 549183690

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 30, 35, 38, 42, 45, 57, 63, 70, 90, 95, 105, 114, 126, 133, 171, 190, 210, 266, 285, 315, 342, 361, 399, 570, 630, 665, 722, 798, 855, 1083, 1129, 1197, 1330, 1710, 1805, 1995, 2166, 2258, 2394, 2527, 3249, 3387, 3610, 3990, 5054, 5415, 5645, 5985, 6498, 6774, 7581, 7903, 10161, 10830, 11290, 11970, 12635, 15162, 15806, 16245, 16935, 20322, 21451, 22743, 23709, 25270, 32490, 33870, 37905, 39515, 42902, 45486, 47418, 50805, 64353, 71127, 75810, 79030, 101610, 107255, 113715, 118545, 128706, 142254, 150157, 193059, 214510, 227430, 237090, 300314, 321765, 355635, 386118, 407569, 450471, 643530, 711270, 750785, 815138, 900942, 965295, 1222707, 1351413, 1501570, 1930590, 2037845, 2252355, 2445414, 2702826, 2852983, 3668121, 4075690, 4504710, 5705966, 6113535, 6757065, 7336242, 8558949, 12227070, 13514130, 14264915, 17117898, 18340605, 25676847, 28529830, 36681210, 42794745, 51353694, 85589490, 128384235, 256768470]

約数ペア:

[(1, 256768470), (2, 128384235), (3, 85589490), (5, 51353694), (6, 42794745), (7, 36681210), (9, 28529830), (10, 25676847), (14, 18340605), (15, 17117898), (18, 14264915), (19, 13514130), (21, 12227070), (30, 8558949), (35, 7336242), (38, 6757065), (42, 6113535), (45, 5705966), (57, 4504710), (63, 4075690), (70, 3668121), (90, 2852983), (95, 2702826), (105, 2445414), (114, 2252355), (126, 2037845), (133, 1930590), (171, 1501570), (190, 1351413), (210, 1222707), (266, 965295), (285, 900942), (315, 815138), (342, 750785), (361, 711270), (399, 643530), (570, 450471), (630, 407569), (665, 386118), (722, 355635), (798, 321765), (855, 300314), (1083, 237090), (1129, 227430), (1197, 214510), (1330, 193059), (1710, 150157), (1805, 142254), (1995, 128706), (2166, 118545), (2258, 113715), (2394, 107255), (2527, 101610), (3249, 79030), (3387, 75810), (3610, 71127), (3990, 64353), (5054, 50805), (5415, 47418), (5645, 45486), (5985, 42902), (6498, 39515), (6774, 37905), (7581, 33870), (7903, 32490), (10161, 25270), (10830, 23709), (11290, 22743), (11970, 21451), (12635, 20322), (15162, 16935), (15806, 16245)]