21303786

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{13709}}^1$

素因数の和:13758

約数の個数: 32

約数和(自身を含む): 50014080

約数和(自身を除く): 28710294

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 74, 111, 222, 259, 518, 777, 1554, 13709, 27418, 41127, 82254, 95963, 191926, 287889, 507233, 575778, 1014466, 1521699, 3043398, 3550631, 7101262, 10651893, 21303786]

約数ペア:

[(1, 21303786), (2, 10651893), (3, 7101262), (6, 3550631), (7, 3043398), (14, 1521699), (21, 1014466), (37, 575778), (42, 507233), (74, 287889), (111, 191926), (222, 95963), (259, 82254), (518, 41127), (777, 27418), (1554, 13709)]