21288078

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1579}}^1$

素因数の和:1701

約数の個数: 48

約数和(自身を含む): 53239680

約数和(自身を除く): 31951602

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 107, 126, 214, 321, 642, 749, 963, 1498, 1579, 1926, 2247, 3158, 4494, 4737, 6741, 9474, 11053, 13482, 14211, 22106, 28422, 33159, 66318, 99477, 168953, 198954, 337906, 506859, 1013718, 1182671, 1520577, 2365342, 3041154, 3548013, 7096026, 10644039, 21288078]

約数ペア:

[(1, 21288078), (2, 10644039), (3, 7096026), (6, 3548013), (7, 3041154), (9, 2365342), (14, 1520577), (18, 1182671), (21, 1013718), (42, 506859), (63, 337906), (107, 198954), (126, 168953), (214, 99477), (321, 66318), (642, 33159), (749, 28422), (963, 22106), (1498, 14211), (1579, 13482), (1926, 11053), (2247, 9474), (3158, 6741), (4494, 4737)]