20636800

素因数分解:

$2^7\times 5^2\times {\mathrm{6449}}^1$

素因数の和:6473

約数の個数: 48

約数和(自身を含む): 50987250

約数和(自身を除く): 30350450

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6449, 12898, 25796, 32245, 51592, 64490, 103184, 128980, 161225, 206368, 257960, 322450, 412736, 515920, 644900, 825472, 1031840, 1289800, 2063680, 2579600, 4127360, 5159200, 10318400, 20636800]

約数ペア:

[(1, 20636800), (2, 10318400), (4, 5159200), (5, 4127360), (8, 2579600), (10, 2063680), (16, 1289800), (20, 1031840), (25, 825472), (32, 644900), (40, 515920), (50, 412736), (64, 322450), (80, 257960), (100, 206368), (128, 161225), (160, 128980), (200, 103184), (320, 64490), (400, 51592), (640, 32245), (800, 25796), (1600, 12898), (3200, 6449)]