21209642

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{20123}}^1$

素因数の和:20173

約数の個数: 16

約数和(自身を含む): 34774272

約数和(自身を除く): 13564630

約数列:

[1, 2, 17, 31, 34, 62, 527, 1054, 20123, 40246, 342091, 623813, 684182, 1247626, 10604821, 21209642]

約数ペア:

[(1, 21209642), (2, 10604821), (17, 1247626), (31, 684182), (34, 623813), (62, 342091), (527, 40246), (1054, 20123)]