21180909

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{1103}}^1$

素因数の和:1316

約数の個数: 16

約数和(自身を含む): 29198592

約数和(自身を除く): 8017683

約数列:

[1, 3, 37, 111, 173, 519, 1103, 3309, 6401, 19203, 40811, 122433, 190819, 572457, 7060303, 21180909]

約数ペア:

[(1, 21180909), (3, 7060303), (37, 572457), (111, 190819), (173, 122433), (519, 40811), (1103, 19203), (3309, 6401)]