21402909

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{5843}}^1$

素因数の和:5897

約数の個数: 24

約数和(自身を含む): 34643232

約数和(自身を除く): 13240323

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 333, 407, 1221, 3663, 5843, 17529, 52587, 64273, 192819, 216191, 578457, 648573, 1945719, 2378101, 7134303, 21402909]

約数ペア:

[(1, 21402909), (3, 7134303), (9, 2378101), (11, 1945719), (33, 648573), (37, 578457), (99, 216191), (111, 192819), (333, 64273), (407, 52587), (1221, 17529), (3663, 5843)]