21553299

素因数分解:

$3^2\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:419

約数の個数: 24

約数和(自身を含む): 31855824

約数和(自身を除く): 10302525

約数列:

[1, 3, 9, 101, 131, 181, 303, 393, 543, 909, 1179, 1629, 13231, 18281, 23711, 39693, 54843, 71133, 119079, 164529, 213399, 2394811, 7184433, 21553299]

約数ペア:

[(1, 21553299), (3, 7184433), (9, 2394811), (101, 213399), (131, 164529), (181, 119079), (303, 71133), (393, 54843), (543, 39693), (909, 23711), (1179, 18281), (1629, 13231)]