21395332

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^2$

素因数の和:356

約数の個数: 36

約数和(自身を含む): 44454144

約数和(自身を除く): 23058812

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 157, 217, 314, 434, 628, 868, 1099, 2198, 4396, 4867, 9734, 19468, 24649, 34069, 49298, 68138, 98596, 136276, 172543, 345086, 690172, 764119, 1528238, 3056476, 5348833, 10697666, 21395332]

約数ペア:

[(1, 21395332), (2, 10697666), (4, 5348833), (7, 3056476), (14, 1528238), (28, 764119), (31, 690172), (62, 345086), (124, 172543), (157, 136276), (217, 98596), (314, 68138), (434, 49298), (628, 34069), (868, 24649), (1099, 19468), (2198, 9734), (4396, 4867)]