21276378

素因数分解:

$2^1\times 3^3\times {\mathrm{394007}}^1$

素因数の和:394018

約数の個数: 16

約数和(自身を含む): 47280960

約数和(自身を除く): 26004582

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 394007, 788014, 1182021, 2364042, 3546063, 7092126, 10638189, 21276378]

約数ペア:

[(1, 21276378), (2, 10638189), (3, 7092126), (6, 3546063), (9, 2364042), (18, 1182021), (27, 788014), (54, 394007)]