21978208

素因数分解:

$2^5\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1663}}^1$

素因数の和:1739

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 28341152

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 59, 112, 118, 224, 236, 413, 472, 826, 944, 1652, 1663, 1888, 3304, 3326, 6608, 6652, 11641, 13216, 13304, 23282, 26608, 46564, 53216, 93128, 98117, 186256, 196234, 372512, 392468, 686819, 784936, 1373638, 1569872, 2747276, 3139744, 5494552, 10989104, 21978208]

約数ペア:

[(1, 21978208), (2, 10989104), (4, 5494552), (7, 3139744), (8, 2747276), (14, 1569872), (16, 1373638), (28, 784936), (32, 686819), (56, 392468), (59, 372512), (112, 196234), (118, 186256), (224, 98117), (236, 93128), (413, 53216), (472, 46564), (826, 26608), (944, 23282), (1652, 13304), (1663, 13216), (1888, 11641), (3304, 6652), (3326, 6608)]