18787366

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:480

約数の個数: 32

約数和(自身を含む): 32114880

約数和(自身を除く): 13327514

約数列:

[1, 2, 13, 23, 26, 46, 89, 178, 299, 353, 598, 706, 1157, 2047, 2314, 4094, 4589, 8119, 9178, 16238, 26611, 31417, 53222, 62834, 105547, 211094, 408421, 722591, 816842, 1445182, 9393683, 18787366]

約数ペア:

[(1, 18787366), (2, 9393683), (13, 1445182), (23, 816842), (26, 722591), (46, 408421), (89, 211094), (178, 105547), (299, 62834), (353, 53222), (598, 31417), (706, 26611), (1157, 16238), (2047, 9178), (2314, 8119), (4094, 4589)]