21305799

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{397}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 31664880

約数和(自身を除く): 10359081

約数列:

[1, 3, 9, 67, 89, 201, 267, 397, 603, 801, 1191, 3573, 5963, 17889, 26599, 35333, 53667, 79797, 105999, 239391, 317997, 2367311, 7101933, 21305799]

約数ペア:

[(1, 21305799), (3, 7101933), (9, 2367311), (67, 317997), (89, 239391), (201, 105999), (267, 79797), (397, 53667), (603, 35333), (801, 26599), (1191, 17889), (3573, 5963)]