20661984

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:337

約数の個数: 144

約数和(自身を含む): 69215328

約数和(自身を除く): 48553344

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 37, 42, 48, 56, 63, 72, 74, 84, 96, 111, 112, 126, 144, 148, 168, 222, 224, 252, 259, 277, 288, 296, 333, 336, 444, 504, 518, 554, 592, 666, 672, 777, 831, 888, 1008, 1036, 1108, 1184, 1332, 1554, 1662, 1776, 1939, 2016, 2072, 2216, 2331, 2493, 2664, 3108, 3324, 3552, 3878, 4144, 4432, 4662, 4986, 5328, 5817, 6216, 6648, 7756, 8288, 8864, 9324, 9972, 10249, 10656, 11634, 12432, 13296, 15512, 17451, 18648, 19944, 20498, 23268, 24864, 26592, 30747, 31024, 34902, 37296, 39888, 40996, 46536, 61494, 62048, 69804, 71743, 74592, 79776, 81992, 92241, 93072, 122988, 139608, 143486, 163984, 184482, 186144, 215229, 245976, 279216, 286972, 327968, 368964, 430458, 491952, 558432, 573944, 645687, 737928, 860916, 983904, 1147888, 1291374, 1475856, 1721832, 2295776, 2582748, 2951712, 3443664, 5165496, 6887328, 10330992, 20661984]

約数ペア:

[(1, 20661984), (2, 10330992), (3, 6887328), (4, 5165496), (6, 3443664), (7, 2951712), (8, 2582748), (9, 2295776), (12, 1721832), (14, 1475856), (16, 1291374), (18, 1147888), (21, 983904), (24, 860916), (28, 737928), (32, 645687), (36, 573944), (37, 558432), (42, 491952), (48, 430458), (56, 368964), (63, 327968), (72, 286972), (74, 279216), (84, 245976), (96, 215229), (111, 186144), (112, 184482), (126, 163984), (144, 143486), (148, 139608), (168, 122988), (222, 93072), (224, 92241), (252, 81992), (259, 79776), (277, 74592), (288, 71743), (296, 69804), (333, 62048), (336, 61494), (444, 46536), (504, 40996), (518, 39888), (554, 37296), (592, 34902), (666, 31024), (672, 30747), (777, 26592), (831, 24864), (888, 23268), (1008, 20498), (1036, 19944), (1108, 18648), (1184, 17451), (1332, 15512), (1554, 13296), (1662, 12432), (1776, 11634), (1939, 10656), (2016, 10249), (2072, 9972), (2216, 9324), (2331, 8864), (2493, 8288), (2664, 7756), (3108, 6648), (3324, 6216), (3552, 5817), (3878, 5328), (4144, 4986), (4432, 4662)]