21978768

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{65413}}^1$

素因数の和:65431

約数の個数: 40

約数和(自身を含む): 64890688

約数和(自身を除く): 42911920

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 65413, 130826, 196239, 261652, 392478, 457891, 523304, 784956, 915782, 1046608, 1373673, 1569912, 1831564, 2747346, 3139824, 3663128, 5494692, 7326256, 10989384, 21978768]

約数ペア:

[(1, 21978768), (2, 10989384), (3, 7326256), (4, 5494692), (6, 3663128), (7, 3139824), (8, 2747346), (12, 1831564), (14, 1569912), (16, 1373673), (21, 1046608), (24, 915782), (28, 784956), (42, 523304), (48, 457891), (56, 392478), (84, 261652), (112, 196239), (168, 130826), (336, 65413)]