18780776

素因数分解:

$2^3\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2221}}^1$

素因数の和:2385

約数の個数: 32

約数和(自身を含む): 40529280

約数和(自身を除く): 21748504

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 151, 302, 604, 1057, 1208, 2114, 2221, 4228, 4442, 8456, 8884, 15547, 17768, 31094, 62188, 124376, 335371, 670742, 1341484, 2347597, 2682968, 4695194, 9390388, 18780776]

約数ペア:

[(1, 18780776), (2, 9390388), (4, 4695194), (7, 2682968), (8, 2347597), (14, 1341484), (28, 670742), (56, 335371), (151, 124376), (302, 62188), (604, 31094), (1057, 17768), (1208, 15547), (2114, 8884), (2221, 8456), (4228, 4442)]