21909272

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{5081}}^1$

素因数の和:5112

約数の個数: 48

約数和(自身を含む): 52141320

約数和(自身を除く): 30232048

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 154, 196, 308, 392, 539, 616, 1078, 2156, 4312, 5081, 10162, 20324, 35567, 40648, 55891, 71134, 111782, 142268, 223564, 248969, 284536, 391237, 447128, 497938, 782474, 995876, 1564948, 1991752, 2738659, 3129896, 5477318, 10954636, 21909272]

約数ペア:

[(1, 21909272), (2, 10954636), (4, 5477318), (7, 3129896), (8, 2738659), (11, 1991752), (14, 1564948), (22, 995876), (28, 782474), (44, 497938), (49, 447128), (56, 391237), (77, 284536), (88, 248969), (98, 223564), (154, 142268), (196, 111782), (308, 71134), (392, 55891), (539, 40648), (616, 35567), (1078, 20324), (2156, 10162), (4312, 5081)]