20997648

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:621

約数の個数: 120

約数和(自身を含む): 69096768

約数和(自身を除く): 48099120

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 37, 42, 48, 56, 63, 72, 74, 84, 111, 112, 126, 144, 148, 168, 222, 252, 259, 296, 333, 336, 444, 504, 518, 563, 592, 666, 777, 888, 1008, 1036, 1126, 1332, 1554, 1689, 1776, 2072, 2252, 2331, 2664, 3108, 3378, 3941, 4144, 4504, 4662, 5067, 5328, 6216, 6756, 7882, 9008, 9324, 10134, 11823, 12432, 13512, 15764, 18648, 20268, 20831, 23646, 27024, 31528, 35469, 37296, 40536, 41662, 47292, 62493, 63056, 70938, 81072, 83324, 94584, 124986, 141876, 145817, 166648, 187479, 189168, 249972, 283752, 291634, 333296, 374958, 437451, 499944, 567504, 583268, 749916, 874902, 999888, 1166536, 1312353, 1499832, 1749804, 2333072, 2624706, 2999664, 3499608, 5249412, 6999216, 10498824, 20997648]

約数ペア:

[(1, 20997648), (2, 10498824), (3, 6999216), (4, 5249412), (6, 3499608), (7, 2999664), (8, 2624706), (9, 2333072), (12, 1749804), (14, 1499832), (16, 1312353), (18, 1166536), (21, 999888), (24, 874902), (28, 749916), (36, 583268), (37, 567504), (42, 499944), (48, 437451), (56, 374958), (63, 333296), (72, 291634), (74, 283752), (84, 249972), (111, 189168), (112, 187479), (126, 166648), (144, 145817), (148, 141876), (168, 124986), (222, 94584), (252, 83324), (259, 81072), (296, 70938), (333, 63056), (336, 62493), (444, 47292), (504, 41662), (518, 40536), (563, 37296), (592, 35469), (666, 31528), (777, 27024), (888, 23646), (1008, 20831), (1036, 20268), (1126, 18648), (1332, 15764), (1554, 13512), (1689, 12432), (1776, 11823), (2072, 10134), (2252, 9324), (2331, 9008), (2664, 7882), (3108, 6756), (3378, 6216), (3941, 5328), (4144, 5067), (4504, 4662)]