81721920

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{12161}}^1$

素因数の和:12188

約数の個数: 112

約数和(自身を含む): 296558208

約数和(自身を除く): 214836288

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 420, 448, 480, 560, 672, 840, 960, 1120, 1344, 1680, 2240, 3360, 6720, 12161, 24322, 36483, 48644, 60805, 72966, 85127, 97288, 121610, 145932, 170254, 182415, 194576, 243220, 255381, 291864, 340508, 364830, 389152, 425635, 486440, 510762, 583728, 681016, 729660, 778304, 851270, 972880, 1021524, 1167456, 1276905, 1362032, 1459320, 1702540, 1945760, 2043048, 2334912, 2553810, 2724064, 2918640, 3405080, 3891520, 4086096, 5107620, 5448128, 5837280, 6810160, 8172192, 10215240, 11674560, 13620320, 16344384, 20430480, 27240640, 40860960, 81721920]

約数ペア:

[(1, 81721920), (2, 40860960), (3, 27240640), (4, 20430480), (5, 16344384), (6, 13620320), (7, 11674560), (8, 10215240), (10, 8172192), (12, 6810160), (14, 5837280), (15, 5448128), (16, 5107620), (20, 4086096), (21, 3891520), (24, 3405080), (28, 2918640), (30, 2724064), (32, 2553810), (35, 2334912), (40, 2043048), (42, 1945760), (48, 1702540), (56, 1459320), (60, 1362032), (64, 1276905), (70, 1167456), (80, 1021524), (84, 972880), (96, 851270), (105, 778304), (112, 729660), (120, 681016), (140, 583728), (160, 510762), (168, 486440), (192, 425635), (210, 389152), (224, 364830), (240, 340508), (280, 291864), (320, 255381), (336, 243220), (420, 194576), (448, 182415), (480, 170254), (560, 145932), (672, 121610), (840, 97288), (960, 85127), (1120, 72966), (1344, 60805), (1680, 48644), (2240, 36483), (3360, 24322), (6720, 12161)]