19889600

素因数分解:

$2^6\times 5^2\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:454

約数の個数: 84

約数和(自身を含む): 50645568

約数和(自身を除く): 30755968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 155, 160, 200, 248, 310, 320, 400, 401, 496, 620, 775, 800, 802, 992, 1240, 1550, 1600, 1604, 1984, 2005, 2480, 3100, 3208, 4010, 4960, 6200, 6416, 8020, 9920, 10025, 12400, 12431, 12832, 16040, 20050, 24800, 24862, 25664, 32080, 40100, 49600, 49724, 62155, 64160, 80200, 99448, 124310, 128320, 160400, 198896, 248620, 310775, 320800, 397792, 497240, 621550, 641600, 795584, 994480, 1243100, 1988960, 2486200, 3977920, 4972400, 9944800, 19889600]

約数ペア:

[(1, 19889600), (2, 9944800), (4, 4972400), (5, 3977920), (8, 2486200), (10, 1988960), (16, 1243100), (20, 994480), (25, 795584), (31, 641600), (32, 621550), (40, 497240), (50, 397792), (62, 320800), (64, 310775), (80, 248620), (100, 198896), (124, 160400), (155, 128320), (160, 124310), (200, 99448), (248, 80200), (310, 64160), (320, 62155), (400, 49724), (401, 49600), (496, 40100), (620, 32080), (775, 25664), (800, 24862), (802, 24800), (992, 20050), (1240, 16040), (1550, 12832), (1600, 12431), (1604, 12400), (1984, 10025), (2005, 9920), (2480, 8020), (3100, 6416), (3208, 6200), (4010, 4960)]