21984327

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{617}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 32971536

約数和(自身を除く): 10987209

約数列:

[1, 3, 9, 37, 107, 111, 321, 333, 617, 963, 1851, 3959, 5553, 11877, 22829, 35631, 66019, 68487, 198057, 205461, 594171, 2442703, 7328109, 21984327]

約数ペア:

[(1, 21984327), (3, 7328109), (9, 2442703), (37, 594171), (107, 205461), (111, 198057), (321, 68487), (333, 66019), (617, 35631), (963, 22829), (1851, 11877), (3959, 5553)]