21222320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37897}}^1$

素因数の和:37917

約数の個数: 40

約数和(自身を含む): 56392224

約数和(自身を除く): 35169904

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37897, 75794, 151588, 189485, 265279, 303176, 378970, 530558, 606352, 757940, 1061116, 1326395, 1515880, 2122232, 2652790, 3031760, 4244464, 5305580, 10611160, 21222320]

約数ペア:

[(1, 21222320), (2, 10611160), (4, 5305580), (5, 4244464), (7, 3031760), (8, 2652790), (10, 2122232), (14, 1515880), (16, 1326395), (20, 1061116), (28, 757940), (35, 606352), (40, 530558), (56, 378970), (70, 303176), (80, 265279), (112, 189485), (140, 151588), (280, 75794), (560, 37897)]