65904220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{449}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 142884000

約数和(自身を除く): 76979780

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 179, 205, 358, 410, 449, 716, 820, 895, 898, 1790, 1796, 2245, 3580, 4490, 7339, 8980, 14678, 18409, 29356, 36695, 36818, 73390, 73636, 80371, 92045, 146780, 160742, 184090, 321484, 368180, 401855, 803710, 1607420, 3295211, 6590422, 13180844, 16476055, 32952110, 65904220]

約数ペア:

[(1, 65904220), (2, 32952110), (4, 16476055), (5, 13180844), (10, 6590422), (20, 3295211), (41, 1607420), (82, 803710), (164, 401855), (179, 368180), (205, 321484), (358, 184090), (410, 160742), (449, 146780), (716, 92045), (820, 80371), (895, 73636), (898, 73390), (1790, 36818), (1796, 36695), (2245, 29356), (3580, 18409), (4490, 14678), (7339, 8980)]