21105176

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{509}}^1$

素因数の和:659

約数の個数: 32

約数和(自身を含む): 40759200

約数和(自身を除く): 19654024

約数列:

[1, 2, 4, 8, 71, 73, 142, 146, 284, 292, 509, 568, 584, 1018, 2036, 4072, 5183, 10366, 20732, 36139, 37157, 41464, 72278, 74314, 144556, 148628, 289112, 297256, 2638147, 5276294, 10552588, 21105176]

約数ペア:

[(1, 21105176), (2, 10552588), (4, 5276294), (8, 2638147), (71, 297256), (73, 289112), (142, 148628), (146, 144556), (284, 74314), (292, 72278), (509, 41464), (568, 37157), (584, 36139), (1018, 20732), (2036, 10366), (4072, 5183)]