19958950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{3299}}^1$

素因数の和:3333

約数の個数: 36

約数和(自身を含む): 40817700

約数和(自身を除く): 20858750

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 550, 605, 1210, 3025, 3299, 6050, 6598, 16495, 32990, 36289, 72578, 82475, 164950, 181445, 362890, 399179, 798358, 907225, 1814450, 1995895, 3991790, 9979475, 19958950]

約数ペア:

[(1, 19958950), (2, 9979475), (5, 3991790), (10, 1995895), (11, 1814450), (22, 907225), (25, 798358), (50, 399179), (55, 362890), (110, 181445), (121, 164950), (242, 82475), (275, 72578), (550, 36289), (605, 32990), (1210, 16495), (3025, 6598), (3299, 6050)]