81050120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{401}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 189872640

約数和(自身を除く): 108822520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 163, 248, 310, 326, 401, 620, 652, 802, 815, 1240, 1304, 1604, 1630, 2005, 3208, 3260, 4010, 5053, 6520, 8020, 10106, 12431, 16040, 20212, 24862, 25265, 40424, 49724, 50530, 62155, 65363, 99448, 101060, 124310, 130726, 202120, 248620, 261452, 326815, 497240, 522904, 653630, 1307260, 2026253, 2614520, 4052506, 8105012, 10131265, 16210024, 20262530, 40525060, 81050120]

約数ペア:

[(1, 81050120), (2, 40525060), (4, 20262530), (5, 16210024), (8, 10131265), (10, 8105012), (20, 4052506), (31, 2614520), (40, 2026253), (62, 1307260), (124, 653630), (155, 522904), (163, 497240), (248, 326815), (310, 261452), (326, 248620), (401, 202120), (620, 130726), (652, 124310), (802, 101060), (815, 99448), (1240, 65363), (1304, 62155), (1604, 50530), (1630, 49724), (2005, 40424), (3208, 25265), (3260, 24862), (4010, 20212), (5053, 16040), (6520, 12431), (8020, 10106)]