19318180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3209}}^1$

素因数の和:3268

約数の個数: 48

約数和(自身を含む): 47456640

約数和(自身を除く): 28138460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3209, 6020, 6418, 12836, 16045, 22463, 32090, 44926, 64180, 89852, 112315, 137987, 224630, 275974, 449260, 551948, 689935, 965909, 1379870, 1931818, 2759740, 3863636, 4829545, 9659090, 19318180]

約数ペア:

[(1, 19318180), (2, 9659090), (4, 4829545), (5, 3863636), (7, 2759740), (10, 1931818), (14, 1379870), (20, 965909), (28, 689935), (35, 551948), (43, 449260), (70, 275974), (86, 224630), (140, 137987), (172, 112315), (215, 89852), (301, 64180), (430, 44926), (602, 32090), (860, 22463), (1204, 16045), (1505, 12836), (3010, 6418), (3209, 6020)]