81630400

素因数分解:

$2^6\times 5^2\times {\mathrm{163}}^1\times {\mathrm{313}}^1$

素因数の和:498

約数の個数: 84

約数和(自身を含む): 202739752

約数和(自身を除く): 121109352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 163, 200, 313, 320, 326, 400, 626, 652, 800, 815, 1252, 1304, 1565, 1600, 1630, 2504, 2608, 3130, 3260, 4075, 5008, 5216, 6260, 6520, 7825, 8150, 10016, 10432, 12520, 13040, 15650, 16300, 20032, 25040, 26080, 31300, 32600, 50080, 51019, 52160, 62600, 65200, 100160, 102038, 125200, 130400, 204076, 250400, 255095, 260800, 408152, 500800, 510190, 816304, 1020380, 1275475, 1632608, 2040760, 2550950, 3265216, 4081520, 5101900, 8163040, 10203800, 16326080, 20407600, 40815200, 81630400]

約数ペア:

[(1, 81630400), (2, 40815200), (4, 20407600), (5, 16326080), (8, 10203800), (10, 8163040), (16, 5101900), (20, 4081520), (25, 3265216), (32, 2550950), (40, 2040760), (50, 1632608), (64, 1275475), (80, 1020380), (100, 816304), (160, 510190), (163, 500800), (200, 408152), (313, 260800), (320, 255095), (326, 250400), (400, 204076), (626, 130400), (652, 125200), (800, 102038), (815, 100160), (1252, 65200), (1304, 62600), (1565, 52160), (1600, 51019), (1630, 50080), (2504, 32600), (2608, 31300), (3130, 26080), (3260, 25040), (4075, 20032), (5008, 16300), (5216, 15650), (6260, 13040), (6520, 12520), (7825, 10432), (8150, 10016)]