18970360

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:368

約数の個数: 64

約数和(自身を含む): 45540000

約数和(自身を除く): 26569640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 109, 152, 190, 218, 229, 380, 436, 458, 545, 760, 872, 916, 1090, 1145, 1832, 2071, 2180, 2290, 4142, 4351, 4360, 4580, 8284, 8702, 9160, 10355, 16568, 17404, 20710, 21755, 24961, 34808, 41420, 43510, 49922, 82840, 87020, 99844, 124805, 174040, 199688, 249610, 474259, 499220, 948518, 998440, 1897036, 2371295, 3794072, 4742590, 9485180, 18970360]

約数ペア:

[(1, 18970360), (2, 9485180), (4, 4742590), (5, 3794072), (8, 2371295), (10, 1897036), (19, 998440), (20, 948518), (38, 499220), (40, 474259), (76, 249610), (95, 199688), (109, 174040), (152, 124805), (190, 99844), (218, 87020), (229, 82840), (380, 49922), (436, 43510), (458, 41420), (545, 34808), (760, 24961), (872, 21755), (916, 20710), (1090, 17404), (1145, 16568), (1832, 10355), (2071, 9160), (2180, 8702), (2290, 8284), (4142, 4580), (4351, 4360)]