19970500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3631}}^1$

素因数の和:3661

約数の個数: 48

約数和(自身を含む): 47593728

約数和(自身を除く): 27623228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3631, 5500, 7262, 14524, 18155, 36310, 39941, 72620, 79882, 90775, 159764, 181550, 199705, 363100, 399410, 453875, 798820, 907750, 998525, 1815500, 1997050, 3994100, 4992625, 9985250, 19970500]

約数ペア:

[(1, 19970500), (2, 9985250), (4, 4992625), (5, 3994100), (10, 1997050), (11, 1815500), (20, 998525), (22, 907750), (25, 798820), (44, 453875), (50, 399410), (55, 363100), (100, 199705), (110, 181550), (125, 159764), (220, 90775), (250, 79882), (275, 72620), (500, 39941), (550, 36310), (1100, 18155), (1375, 14524), (2750, 7262), (3631, 5500)]