21000332128

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{2459}}^1\times {\mathrm{7213}}^1$

素因数の和:9719

約数の個数: 48

約数和(自身を含む): 42484977360

約数和(自身を除く): 21484645232

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 148, 296, 592, 1184, 2459, 4918, 7213, 9836, 14426, 19672, 28852, 39344, 57704, 78688, 90983, 115408, 181966, 230816, 266881, 363932, 533762, 727864, 1067524, 1455728, 2135048, 2911456, 4270096, 8540192, 17736767, 35473534, 70947068, 141894136, 283788272, 567576544, 656260379, 1312520758, 2625041516, 5250083032, 10500166064, 21000332128]

約数ペア:

[(1, 21000332128), (2, 10500166064), (4, 5250083032), (8, 2625041516), (16, 1312520758), (32, 656260379), (37, 567576544), (74, 283788272), (148, 141894136), (296, 70947068), (592, 35473534), (1184, 17736767), (2459, 8540192), (4918, 4270096), (7213, 2911456), (9836, 2135048), (14426, 1455728), (19672, 1067524), (28852, 727864), (39344, 533762), (57704, 363932), (78688, 266881), (90983, 230816), (115408, 181966)]