21724395

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2687}}^1$

素因数の和:2720

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 22401813

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2687, 2695, 8061, 8085, 13435, 18809, 29557, 40305, 56427, 88671, 94045, 131663, 147785, 206899, 282135, 394989, 443355, 620697, 658315, 1034495, 1448293, 1974945, 3103485, 4344879, 7241465, 21724395]

約数ペア:

[(1, 21724395), (3, 7241465), (5, 4344879), (7, 3103485), (11, 1974945), (15, 1448293), (21, 1034495), (33, 658315), (35, 620697), (49, 443355), (55, 394989), (77, 282135), (105, 206899), (147, 147785), (165, 131663), (231, 94045), (245, 88671), (385, 56427), (539, 40305), (735, 29557), (1155, 18809), (1617, 13435), (2687, 8085), (2695, 8061)]