20957904

素因数分解:

$2^4\times 3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:257

約数の個数: 120

約数和(自身を含む): 65111904

約数和(自身を除く): 44154000

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 33, 36, 44, 48, 66, 72, 88, 99, 101, 131, 132, 144, 176, 198, 202, 262, 264, 303, 393, 396, 404, 524, 528, 606, 786, 792, 808, 909, 1048, 1111, 1179, 1212, 1441, 1572, 1584, 1616, 1818, 2096, 2222, 2358, 2424, 2882, 3144, 3333, 3636, 4323, 4444, 4716, 4848, 5764, 6288, 6666, 7272, 8646, 8888, 9432, 9999, 11528, 12969, 13231, 13332, 14544, 17292, 17776, 18864, 19998, 23056, 25938, 26462, 26664, 34584, 39693, 39996, 51876, 52924, 53328, 69168, 79386, 79992, 103752, 105848, 119079, 145541, 158772, 159984, 207504, 211696, 238158, 291082, 317544, 436623, 476316, 582164, 635088, 873246, 952632, 1164328, 1309869, 1746492, 1905264, 2328656, 2619738, 3492984, 5239476, 6985968, 10478952, 20957904]

約数ペア:

[(1, 20957904), (2, 10478952), (3, 6985968), (4, 5239476), (6, 3492984), (8, 2619738), (9, 2328656), (11, 1905264), (12, 1746492), (16, 1309869), (18, 1164328), (22, 952632), (24, 873246), (33, 635088), (36, 582164), (44, 476316), (48, 436623), (66, 317544), (72, 291082), (88, 238158), (99, 211696), (101, 207504), (131, 159984), (132, 158772), (144, 145541), (176, 119079), (198, 105848), (202, 103752), (262, 79992), (264, 79386), (303, 69168), (393, 53328), (396, 52924), (404, 51876), (524, 39996), (528, 39693), (606, 34584), (786, 26664), (792, 26462), (808, 25938), (909, 23056), (1048, 19998), (1111, 18864), (1179, 17776), (1212, 17292), (1441, 14544), (1572, 13332), (1584, 13231), (1616, 12969), (1818, 11528), (2096, 9999), (2222, 9432), (2358, 8888), (2424, 8646), (2882, 7272), (3144, 6666), (3333, 6288), (3636, 5764), (4323, 4848), (4444, 4716)]