21441945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3853}}^1$

素因数の和:3921

約数の個数: 32

約数和(自身を含む): 39958272

約数和(自身を除く): 18516327

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 105, 159, 265, 371, 795, 1113, 1855, 3853, 5565, 11559, 19265, 26971, 57795, 80913, 134855, 204209, 404565, 612627, 1021045, 1429463, 3063135, 4288389, 7147315, 21441945]

約数ペア:

[(1, 21441945), (3, 7147315), (5, 4288389), (7, 3063135), (15, 1429463), (21, 1021045), (35, 612627), (53, 404565), (105, 204209), (159, 134855), (265, 80913), (371, 57795), (795, 26971), (1113, 19265), (1855, 11559), (3853, 5565)]