21525896

素因数分解:

$2^3\times 7^2\times {\mathrm{89}}^1\times {\mathrm{617}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 47555100

約数和(自身を除く): 26029204

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 89, 98, 178, 196, 356, 392, 617, 623, 712, 1234, 1246, 2468, 2492, 4319, 4361, 4936, 4984, 8638, 8722, 17276, 17444, 30233, 34552, 34888, 54913, 60466, 109826, 120932, 219652, 241864, 384391, 439304, 768782, 1537564, 2690737, 3075128, 5381474, 10762948, 21525896]

約数ペア:

[(1, 21525896), (2, 10762948), (4, 5381474), (7, 3075128), (8, 2690737), (14, 1537564), (28, 768782), (49, 439304), (56, 384391), (89, 241864), (98, 219652), (178, 120932), (196, 109826), (356, 60466), (392, 54913), (617, 34888), (623, 34552), (712, 30233), (1234, 17444), (1246, 17276), (2468, 8722), (2492, 8638), (4319, 4984), (4361, 4936)]