21078694

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{151}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 40055040

約数和(自身を除く): 18976346

約数列:

[1, 2, 7, 13, 14, 26, 59, 91, 118, 151, 169, 182, 302, 338, 413, 767, 826, 1057, 1183, 1534, 1963, 2114, 2366, 3926, 5369, 8909, 9971, 10738, 13741, 17818, 19942, 25519, 27482, 51038, 62363, 69797, 115817, 124726, 139594, 178633, 231634, 357266, 810719, 1505621, 1621438, 3011242, 10539347, 21078694]

約数ペア:

[(1, 21078694), (2, 10539347), (7, 3011242), (13, 1621438), (14, 1505621), (26, 810719), (59, 357266), (91, 231634), (118, 178633), (151, 139594), (169, 124726), (182, 115817), (302, 69797), (338, 62363), (413, 51038), (767, 27482), (826, 25519), (1057, 19942), (1183, 17818), (1534, 13741), (1963, 10738), (2114, 9971), (2366, 8909), (3926, 5369)]