21289156

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8543}}^1$

素因数の和:8643

約数の個数: 24

約数和(自身を含む): 43061760

約数和(自身を除く): 21772604

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8543, 17086, 34172, 59801, 119602, 239204, 760327, 1520654, 3041308, 5322289, 10644578, 21289156]

約数ペア:

[(1, 21289156), (2, 10644578), (4, 5322289), (7, 3041308), (14, 1520654), (28, 760327), (89, 239204), (178, 119602), (356, 59801), (623, 34172), (1246, 17086), (2492, 8543)]