21131259

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1\times {\mathrm{383}}^1$

素因数の和:786

約数の個数: 16

約数和(自身を含む): 28864512

約数和(自身を除く): 7733253

約数列:

[1, 3, 53, 159, 347, 383, 1041, 1149, 18391, 20299, 55173, 60897, 132901, 398703, 7043753, 21131259]

約数ペア:

[(1, 21131259), (3, 7043753), (53, 398703), (159, 132901), (347, 60897), (383, 55173), (1041, 20299), (1149, 18391)]