20487411

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1571}}^1$

素因数の和:1613

約数の個数: 40

約数和(自身を含む): 36520704

約数和(自身を除く): 16033293

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 81, 161, 189, 207, 483, 567, 621, 1449, 1571, 1863, 4347, 4713, 10997, 13041, 14139, 32991, 36133, 42417, 98973, 108399, 127251, 252931, 296919, 325197, 758793, 890757, 975591, 2276379, 2926773, 6829137, 20487411]

約数ペア:

[(1, 20487411), (3, 6829137), (7, 2926773), (9, 2276379), (21, 975591), (23, 890757), (27, 758793), (63, 325197), (69, 296919), (81, 252931), (161, 127251), (189, 108399), (207, 98973), (483, 42417), (567, 36133), (621, 32991), (1449, 14139), (1571, 13041), (1863, 10997), (4347, 4713)]