18986320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12491}}^1$

素因数の和:12523

約数の個数: 40

約数和(自身を含む): 46470240

約数和(自身を除く): 27483920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12491, 24982, 49964, 62455, 99928, 124910, 199856, 237329, 249820, 474658, 499640, 949316, 999280, 1186645, 1898632, 2373290, 3797264, 4746580, 9493160, 18986320]

約数ペア:

[(1, 18986320), (2, 9493160), (4, 4746580), (5, 3797264), (8, 2373290), (10, 1898632), (16, 1186645), (19, 999280), (20, 949316), (38, 499640), (40, 474658), (76, 249820), (80, 237329), (95, 199856), (152, 124910), (190, 99928), (304, 62455), (380, 49964), (760, 24982), (1520, 12491)]