208839640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{2521}}^1$

素因数の和:2660

約数の個数: 64

約数和(自身を含む): 499356000

約数和(自身を除く): 290516360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 109, 152, 190, 218, 380, 436, 545, 760, 872, 1090, 2071, 2180, 2521, 4142, 4360, 5042, 8284, 10084, 10355, 12605, 16568, 20168, 20710, 25210, 41420, 47899, 50420, 82840, 95798, 100840, 191596, 239495, 274789, 383192, 478990, 549578, 957980, 1099156, 1373945, 1915960, 2198312, 2747890, 5220991, 5495780, 10441982, 10991560, 20883964, 26104955, 41767928, 52209910, 104419820, 208839640]

約数ペア:

[(1, 208839640), (2, 104419820), (4, 52209910), (5, 41767928), (8, 26104955), (10, 20883964), (19, 10991560), (20, 10441982), (38, 5495780), (40, 5220991), (76, 2747890), (95, 2198312), (109, 1915960), (152, 1373945), (190, 1099156), (218, 957980), (380, 549578), (436, 478990), (545, 383192), (760, 274789), (872, 239495), (1090, 191596), (2071, 100840), (2180, 95798), (2521, 82840), (4142, 50420), (4360, 47899), (5042, 41420), (8284, 25210), (10084, 20710), (10355, 20168), (12605, 16568)]