20561616

素因数分解:

$2^4\times 3^2\times {\mathrm{142789}}^1$

素因数の和:142803

約数の個数: 30

約数和(自身を含む): 57544370

約数和(自身を除く): 36982754

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 142789, 285578, 428367, 571156, 856734, 1142312, 1285101, 1713468, 2284624, 2570202, 3426936, 5140404, 6853872, 10280808, 20561616]

約数ペア:

[(1, 20561616), (2, 10280808), (3, 6853872), (4, 5140404), (6, 3426936), (8, 2570202), (9, 2284624), (12, 1713468), (16, 1285101), (18, 1142312), (24, 856734), (36, 571156), (48, 428367), (72, 285578), (144, 142789)]