21428478

素因数分解:

$2^1\times 3^2\times {\mathrm{197}}^1\times {\mathrm{6043}}^1$

素因数の和:6248

約数の個数: 24

約数和(自身を含む): 46671768

約数和(自身を除く): 25243290

約数列:

[1, 2, 3, 6, 9, 18, 197, 394, 591, 1182, 1773, 3546, 6043, 12086, 18129, 36258, 54387, 108774, 1190471, 2380942, 3571413, 7142826, 10714239, 21428478]

約数ペア:

[(1, 21428478), (2, 10714239), (3, 7142826), (6, 3571413), (9, 2380942), (18, 1190471), (197, 108774), (394, 54387), (591, 36258), (1182, 18129), (1773, 12086), (3546, 6043)]