21420378

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{170003}}^1$

素因数の和:170018

約数の個数: 24

約数和(自身を含む): 53041248

約数和(自身を除く): 31620870

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 170003, 340006, 510009, 1020018, 1190021, 1530027, 2380042, 3060054, 3570063, 7140126, 10710189, 21420378]

約数ペア:

[(1, 21420378), (2, 10710189), (3, 7140126), (6, 3570063), (7, 3060054), (9, 2380042), (14, 1530027), (18, 1190021), (21, 1020018), (42, 510009), (63, 340006), (126, 170003)]