78123040

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11909}}^1$

素因数の和:11965

約数の個数: 48

約数和(自身を含む): 189083160

約数和(自身を除く): 110960120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 6560, 11909, 23818, 47636, 59545, 95272, 119090, 190544, 238180, 381088, 476360, 488269, 952720, 976538, 1905440, 1953076, 2441345, 3906152, 4882690, 7812304, 9765380, 15624608, 19530760, 39061520, 78123040]

約数ペア:

[(1, 78123040), (2, 39061520), (4, 19530760), (5, 15624608), (8, 9765380), (10, 7812304), (16, 4882690), (20, 3906152), (32, 2441345), (40, 1953076), (41, 1905440), (80, 976538), (82, 952720), (160, 488269), (164, 476360), (205, 381088), (328, 238180), (410, 190544), (656, 119090), (820, 95272), (1312, 59545), (1640, 47636), (3280, 23818), (6560, 11909)]