21167797990

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26794681}}^1$

素因数の和:26794767

約数の個数: 16

約数和(自身を含む): 38584342080

約数和(自身を除く): 17416544090

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 26794681, 53589362, 133973405, 267946810, 2116779799, 4233559598, 10583898995, 21167797990]

約数ペア:

[(1, 21167797990), (2, 10583898995), (5, 4233559598), (10, 2116779799), (79, 267946810), (158, 133973405), (395, 53589362), (790, 26794681)]