19513180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8951}}^1$

素因数の和:9069

約数の個数: 24

約数和(自身を含む): 41358240

約数和(自身を除く): 21845060

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8951, 17902, 35804, 44755, 89510, 179020, 975659, 1951318, 3902636, 4878295, 9756590, 19513180]

約数ペア:

[(1, 19513180), (2, 9756590), (4, 4878295), (5, 3902636), (10, 1951318), (20, 975659), (109, 179020), (218, 89510), (436, 44755), (545, 35804), (1090, 17902), (2180, 8951)]