821282480

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{337}}^1\times {\mathrm{743}}^1$

素因数の和:1134

約数の個数: 80

約数和(自身を含む): 1964499264

約数和(自身を除く): 1143216784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 337, 410, 656, 674, 743, 820, 1348, 1486, 1640, 1685, 2696, 2972, 3280, 3370, 3715, 5392, 5944, 6740, 7430, 11888, 13480, 13817, 14860, 26960, 27634, 29720, 30463, 55268, 59440, 60926, 69085, 110536, 121852, 138170, 152315, 221072, 243704, 250391, 276340, 304630, 487408, 500782, 552680, 609260, 1001564, 1105360, 1218520, 1251955, 2003128, 2437040, 2503910, 4006256, 5007820, 10015640, 10266031, 20031280, 20532062, 41064124, 51330155, 82128248, 102660310, 164256496, 205320620, 410641240, 821282480]

約数ペア:

[(1, 821282480), (2, 410641240), (4, 205320620), (5, 164256496), (8, 102660310), (10, 82128248), (16, 51330155), (20, 41064124), (40, 20532062), (41, 20031280), (80, 10266031), (82, 10015640), (164, 5007820), (205, 4006256), (328, 2503910), (337, 2437040), (410, 2003128), (656, 1251955), (674, 1218520), (743, 1105360), (820, 1001564), (1348, 609260), (1486, 552680), (1640, 500782), (1685, 487408), (2696, 304630), (2972, 276340), (3280, 250391), (3370, 243704), (3715, 221072), (5392, 152315), (5944, 138170), (6740, 121852), (7430, 110536), (11888, 69085), (13480, 60926), (13817, 59440), (14860, 55268), (26960, 30463), (27634, 29720)]