20466800

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2693}}^1$

素因数の和:2730

約数の個数: 60

約数和(自身を含む): 51778680

約数和(自身を除く): 31311880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2693, 3800, 5386, 7600, 10772, 13465, 21544, 26930, 43088, 51167, 53860, 67325, 102334, 107720, 134650, 204668, 215440, 255835, 269300, 409336, 511670, 538600, 818672, 1023340, 1077200, 1279175, 2046680, 2558350, 4093360, 5116700, 10233400, 20466800]

約数ペア:

[(1, 20466800), (2, 10233400), (4, 5116700), (5, 4093360), (8, 2558350), (10, 2046680), (16, 1279175), (19, 1077200), (20, 1023340), (25, 818672), (38, 538600), (40, 511670), (50, 409336), (76, 269300), (80, 255835), (95, 215440), (100, 204668), (152, 134650), (190, 107720), (200, 102334), (304, 67325), (380, 53860), (400, 51167), (475, 43088), (760, 26930), (950, 21544), (1520, 13465), (1900, 10772), (2693, 7600), (3800, 5386)]