80263240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:610

約数の個数: 64

約数和(自身を含む): 187110000

約数和(自身を除く): 106846760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 109, 164, 205, 218, 328, 410, 436, 449, 545, 820, 872, 898, 1090, 1640, 1796, 2180, 2245, 3592, 4360, 4469, 4490, 8938, 8980, 17876, 17960, 18409, 22345, 35752, 36818, 44690, 48941, 73636, 89380, 92045, 97882, 147272, 178760, 184090, 195764, 244705, 368180, 391528, 489410, 736360, 978820, 1957640, 2006581, 4013162, 8026324, 10032905, 16052648, 20065810, 40131620, 80263240]

約数ペア:

[(1, 80263240), (2, 40131620), (4, 20065810), (5, 16052648), (8, 10032905), (10, 8026324), (20, 4013162), (40, 2006581), (41, 1957640), (82, 978820), (109, 736360), (164, 489410), (205, 391528), (218, 368180), (328, 244705), (410, 195764), (436, 184090), (449, 178760), (545, 147272), (820, 97882), (872, 92045), (898, 89380), (1090, 73636), (1640, 48941), (1796, 44690), (2180, 36818), (2245, 35752), (3592, 22345), (4360, 18409), (4469, 17960), (4490, 17876), (8938, 8980)]