21977811

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:333

約数の個数: 40

約数和(自身を含む): 35126784

約数和(自身を除く): 13148973

約数列:

[1, 3, 9, 23, 27, 47, 69, 81, 141, 207, 251, 423, 621, 753, 1081, 1269, 1863, 2259, 3243, 3807, 5773, 6777, 9729, 11797, 17319, 20331, 29187, 35391, 51957, 87561, 106173, 155871, 271331, 318519, 467613, 813993, 955557, 2441979, 7325937, 21977811]

約数ペア:

[(1, 21977811), (3, 7325937), (9, 2441979), (23, 955557), (27, 813993), (47, 467613), (69, 318519), (81, 271331), (141, 155871), (207, 106173), (251, 87561), (423, 51957), (621, 35391), (753, 29187), (1081, 20331), (1269, 17319), (1863, 11797), (2259, 9729), (3243, 6777), (3807, 5773)]