21308742

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13009}}^1$

素因数の和:13037

約数の個数: 48

約数和(自身を含む): 56827680

約数和(自身を除く): 35518938

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 13009, 26018, 39027, 78054, 91063, 117081, 169117, 182126, 234162, 273189, 338234, 507351, 546378, 819567, 1014702, 1183819, 1522053, 1639134, 2367638, 3044106, 3551457, 7102914, 10654371, 21308742]

約数ペア:

[(1, 21308742), (2, 10654371), (3, 7102914), (6, 3551457), (7, 3044106), (9, 2367638), (13, 1639134), (14, 1522053), (18, 1183819), (21, 1014702), (26, 819567), (39, 546378), (42, 507351), (63, 338234), (78, 273189), (91, 234162), (117, 182126), (126, 169117), (182, 117081), (234, 91063), (273, 78054), (546, 39027), (819, 26018), (1638, 13009)]