21093950

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^2\times {\mathrm{439}}^1$

素因数の和:513

約数の個数: 36

約数和(自身を含む): 40633560

約数和(自身を除く): 19539610

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 439, 775, 878, 961, 1550, 1922, 2195, 4390, 4805, 9610, 10975, 13609, 21950, 24025, 27218, 48050, 68045, 136090, 340225, 421879, 680450, 843758, 2109395, 4218790, 10546975, 21093950]

約数ペア:

[(1, 21093950), (2, 10546975), (5, 4218790), (10, 2109395), (25, 843758), (31, 680450), (50, 421879), (62, 340225), (155, 136090), (310, 68045), (439, 48050), (775, 27218), (878, 24025), (961, 21950), (1550, 13609), (1922, 10975), (2195, 9610), (4390, 4805)]