81191820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1353197}}^1$

素因数の和:1353209

約数の個数: 24

約数和(自身を含む): 227337264

約数和(自身を除く): 146145444

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1353197, 2706394, 4059591, 5412788, 6765985, 8119182, 13531970, 16238364, 20297955, 27063940, 40595910, 81191820]

約数ペア:

[(1, 81191820), (2, 40595910), (3, 27063940), (4, 20297955), (5, 16238364), (6, 13531970), (10, 8119182), (12, 6765985), (15, 5412788), (20, 4059591), (30, 2706394), (60, 1353197)]