21472080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12781}}^1$

素因数の和:12804

約数の個数: 80

約数和(自身を含む): 76078464

約数和(自身を除く): 54606384

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, 12781, 25562, 38343, 51124, 63905, 76686, 89467, 102248, 127810, 153372, 178934, 191715, 204496, 255620, 268401, 306744, 357868, 383430, 447335, 511240, 536802, 613488, 715736, 766860, 894670, 1022480, 1073604, 1342005, 1431472, 1533720, 1789340, 2147208, 2684010, 3067440, 3578680, 4294416, 5368020, 7157360, 10736040, 21472080]

約数ペア:

[(1, 21472080), (2, 10736040), (3, 7157360), (4, 5368020), (5, 4294416), (6, 3578680), (7, 3067440), (8, 2684010), (10, 2147208), (12, 1789340), (14, 1533720), (15, 1431472), (16, 1342005), (20, 1073604), (21, 1022480), (24, 894670), (28, 766860), (30, 715736), (35, 613488), (40, 536802), (42, 511240), (48, 447335), (56, 383430), (60, 357868), (70, 306744), (80, 268401), (84, 255620), (105, 204496), (112, 191715), (120, 178934), (140, 153372), (168, 127810), (210, 102248), (240, 89467), (280, 76686), (336, 63905), (420, 51124), (560, 38343), (840, 25562), (1680, 12781)]