21404574

素因数分解:

$2^1\times 3^4\times {\mathrm{37}}^1\times {\mathrm{3571}}^1$

素因数の和:3622

約数の個数: 40

約数和(自身を含む): 49272168

約数和(自身を除く): 27867594

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 81, 111, 162, 222, 333, 666, 999, 1998, 2997, 3571, 5994, 7142, 10713, 21426, 32139, 64278, 96417, 132127, 192834, 264254, 289251, 396381, 578502, 792762, 1189143, 2378286, 3567429, 7134858, 10702287, 21404574]

約数ペア:

[(1, 21404574), (2, 10702287), (3, 7134858), (6, 3567429), (9, 2378286), (18, 1189143), (27, 792762), (37, 578502), (54, 396381), (74, 289251), (81, 264254), (111, 192834), (162, 132127), (222, 96417), (333, 64278), (666, 32139), (999, 21426), (1998, 10713), (2997, 7142), (3571, 5994)]