19479430

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 36352800

約数和(自身を除く): 16873370

約数列:

[1, 2, 5, 10, 43, 86, 89, 178, 215, 430, 445, 509, 890, 1018, 2545, 3827, 5090, 7654, 19135, 21887, 38270, 43774, 45301, 90602, 109435, 218870, 226505, 453010, 1947943, 3895886, 9739715, 19479430]

約数ペア:

[(1, 19479430), (2, 9739715), (5, 3895886), (10, 1947943), (43, 453010), (86, 226505), (89, 218870), (178, 109435), (215, 90602), (430, 45301), (445, 43774), (509, 38270), (890, 21887), (1018, 19135), (2545, 7654), (3827, 5090)]