21347871280

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{307}}^1\times {\mathrm{3463}}^1$

素因数の和:4034

約数の個数: 80

約数和(自身を含む): 50008299264

約数和(自身を除く): 28660427984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 307, 502, 614, 1004, 1228, 1255, 1535, 2008, 2456, 2510, 3070, 3463, 4016, 4912, 5020, 6140, 6926, 10040, 12280, 13852, 17315, 20080, 24560, 27704, 34630, 55408, 69260, 77057, 138520, 154114, 277040, 308228, 385285, 616456, 770570, 869213, 1063141, 1232912, 1541140, 1738426, 2126282, 3082280, 3476852, 4252564, 4346065, 5315705, 6164560, 6953704, 8505128, 8692130, 10631410, 13907408, 17010256, 17384260, 21262820, 34768520, 42525640, 69537040, 85051280, 266848391, 533696782, 1067393564, 1334241955, 2134787128, 2668483910, 4269574256, 5336967820, 10673935640, 21347871280]

約数ペア:

[(1, 21347871280), (2, 10673935640), (4, 5336967820), (5, 4269574256), (8, 2668483910), (10, 2134787128), (16, 1334241955), (20, 1067393564), (40, 533696782), (80, 266848391), (251, 85051280), (307, 69537040), (502, 42525640), (614, 34768520), (1004, 21262820), (1228, 17384260), (1255, 17010256), (1535, 13907408), (2008, 10631410), (2456, 8692130), (2510, 8505128), (3070, 6953704), (3463, 6164560), (4016, 5315705), (4912, 4346065), (5020, 4252564), (6140, 3476852), (6926, 3082280), (10040, 2126282), (12280, 1738426), (13852, 1541140), (17315, 1232912), (20080, 1063141), (24560, 869213), (27704, 770570), (34630, 616456), (55408, 385285), (69260, 308228), (77057, 277040), (138520, 154114)]