20681200

素因数分解:

$2^4\times 5^2\times {\mathrm{149}}^1\times {\mathrm{347}}^1$

素因数の和:514

約数の個数: 60

約数和(自身を含む): 50164200

約数和(自身を除く): 29483000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 149, 200, 298, 347, 400, 596, 694, 745, 1192, 1388, 1490, 1735, 2384, 2776, 2980, 3470, 3725, 5552, 5960, 6940, 7450, 8675, 11920, 13880, 14900, 17350, 27760, 29800, 34700, 51703, 59600, 69400, 103406, 138800, 206812, 258515, 413624, 517030, 827248, 1034060, 1292575, 2068120, 2585150, 4136240, 5170300, 10340600, 20681200]

約数ペア:

[(1, 20681200), (2, 10340600), (4, 5170300), (5, 4136240), (8, 2585150), (10, 2068120), (16, 1292575), (20, 1034060), (25, 827248), (40, 517030), (50, 413624), (80, 258515), (100, 206812), (149, 138800), (200, 103406), (298, 69400), (347, 59600), (400, 51703), (596, 34700), (694, 29800), (745, 27760), (1192, 17350), (1388, 14900), (1490, 13880), (1735, 11920), (2384, 8675), (2776, 7450), (2980, 6940), (3470, 5960), (3725, 5552)]