19031551

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 26790912

約数和(自身を除く): 7759361

約数列:

[1, 7, 11, 17, 31, 49, 67, 77, 119, 187, 217, 341, 469, 527, 539, 737, 833, 1139, 1309, 1519, 2077, 2387, 3283, 3689, 5159, 5797, 7973, 9163, 12529, 14539, 16709, 22847, 25823, 35309, 36113, 40579, 55811, 87703, 101773, 159929, 247163, 284053, 388399, 613921, 1119503, 1730141, 2718793, 19031551]

約数ペア:

[(1, 19031551), (7, 2718793), (11, 1730141), (17, 1119503), (31, 613921), (49, 388399), (67, 284053), (77, 247163), (119, 159929), (187, 101773), (217, 87703), (341, 55811), (469, 40579), (527, 36113), (539, 35309), (737, 25823), (833, 22847), (1139, 16709), (1309, 14539), (1519, 12529), (2077, 9163), (2387, 7973), (3283, 5797), (3689, 5159)]