21257451

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{34231}}^1$

素因数の和:34263

約数の個数: 16

約数和(自身を含む): 32862720

約数和(自身を除く): 11605269

約数列:

[1, 3, 9, 23, 27, 69, 207, 621, 34231, 102693, 308079, 787313, 924237, 2361939, 7085817, 21257451]

約数ペア:

[(1, 21257451), (3, 7085817), (9, 2361939), (23, 924237), (27, 787313), (69, 308079), (207, 102693), (621, 34231)]