18389223

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{457}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 28293408

約数和(自身を除く): 9904185

約数列:

[1, 3, 9, 17, 51, 153, 263, 457, 789, 1371, 2367, 4113, 4471, 7769, 13413, 23307, 40239, 69921, 120191, 360573, 1081719, 2043247, 6129741, 18389223]

約数ペア:

[(1, 18389223), (3, 6129741), (9, 2043247), (17, 1081719), (51, 360573), (153, 120191), (263, 69921), (457, 40239), (789, 23307), (1371, 13413), (2367, 7769), (4113, 4471)]