19611440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5701}}^1$

素因数の和:5757

約数の個数: 40

約数和(自身を含む): 46665168

約数和(自身を除く): 27053728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5701, 11402, 22804, 28505, 45608, 57010, 91216, 114020, 228040, 245143, 456080, 490286, 980572, 1225715, 1961144, 2451430, 3922288, 4902860, 9805720, 19611440]

約数ペア:

[(1, 19611440), (2, 9805720), (4, 4902860), (5, 3922288), (8, 2451430), (10, 1961144), (16, 1225715), (20, 980572), (40, 490286), (43, 456080), (80, 245143), (86, 228040), (172, 114020), (215, 91216), (344, 57010), (430, 45608), (688, 28505), (860, 22804), (1720, 11402), (3440, 5701)]