21081438

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1297}}^1$

素因数の和:1358

約数の個数: 64

約数和(自身を含む): 54827520

約数和(自身を除く): 33746082

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 43, 54, 63, 86, 126, 129, 189, 258, 301, 378, 387, 602, 774, 903, 1161, 1297, 1806, 2322, 2594, 2709, 3891, 5418, 7782, 8127, 9079, 11673, 16254, 18158, 23346, 27237, 35019, 54474, 55771, 70038, 81711, 111542, 163422, 167313, 245133, 334626, 390397, 490266, 501939, 780794, 1003878, 1171191, 1505817, 2342382, 3011634, 3513573, 7027146, 10540719, 21081438]

約数ペア:

[(1, 21081438), (2, 10540719), (3, 7027146), (6, 3513573), (7, 3011634), (9, 2342382), (14, 1505817), (18, 1171191), (21, 1003878), (27, 780794), (42, 501939), (43, 490266), (54, 390397), (63, 334626), (86, 245133), (126, 167313), (129, 163422), (189, 111542), (258, 81711), (301, 70038), (378, 55771), (387, 54474), (602, 35019), (774, 27237), (903, 23346), (1161, 18158), (1297, 16254), (1806, 11673), (2322, 9079), (2594, 8127), (2709, 7782), (3891, 5418)]