21065769

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{683}}^1$

素因数の和:861

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 10945431

約数列:

[1, 3, 9, 23, 69, 149, 207, 447, 683, 1341, 2049, 3427, 6147, 10281, 15709, 30843, 47127, 101767, 141381, 305301, 915903, 2340641, 7021923, 21065769]

約数ペア:

[(1, 21065769), (3, 7021923), (9, 2340641), (23, 915903), (69, 305301), (149, 141381), (207, 101767), (447, 47127), (683, 30843), (1341, 15709), (2049, 10281), (3427, 6147)]