21850130

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:574

約数の個数: 32

約数和(自身を含む): 40687920

約数和(自身を除く): 18837790

約数列:

[1, 2, 5, 10, 41, 82, 137, 205, 274, 389, 410, 685, 778, 1370, 1945, 3890, 5617, 11234, 15949, 28085, 31898, 53293, 56170, 79745, 106586, 159490, 266465, 532930, 2185013, 4370026, 10925065, 21850130]

約数ペア:

[(1, 21850130), (2, 10925065), (5, 4370026), (10, 2185013), (41, 532930), (82, 266465), (137, 159490), (205, 106586), (274, 79745), (389, 56170), (410, 53293), (685, 31898), (778, 28085), (1370, 15949), (1945, 11234), (3890, 5617)]