21000751218

素因数分解:

$2^1\times 3^2\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{189493}}^1$

素因数の和:189679

約数の個数: 48

約数和(自身を含む): 46824725376

約数和(自身を除く): 25823974158

約数列:

[1, 2, 3, 6, 9, 18, 47, 94, 131, 141, 262, 282, 393, 423, 786, 846, 1179, 2358, 6157, 12314, 18471, 36942, 55413, 110826, 189493, 378986, 568479, 1136958, 1705437, 3410874, 8906171, 17812342, 24823583, 26718513, 49647166, 53437026, 74470749, 80155539, 148941498, 160311078, 223412247, 446824494, 1166708401, 2333416802, 3500125203, 7000250406, 10500375609, 21000751218]

約数ペア:

[(1, 21000751218), (2, 10500375609), (3, 7000250406), (6, 3500125203), (9, 2333416802), (18, 1166708401), (47, 446824494), (94, 223412247), (131, 160311078), (141, 148941498), (262, 80155539), (282, 74470749), (393, 53437026), (423, 49647166), (786, 26718513), (846, 24823583), (1179, 17812342), (2358, 8906171), (6157, 3410874), (12314, 1705437), (18471, 1136958), (36942, 568479), (55413, 378986), (110826, 189493)]