19915361

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:344

約数の個数: 16

約数和(自身を含む): 21450240

約数和(自身を除く): 1534879

約数列:

[1, 31, 37, 97, 179, 1147, 3007, 3589, 5549, 6623, 17363, 111259, 205313, 538253, 642431, 19915361]

約数ペア:

[(1, 19915361), (31, 642431), (37, 538253), (97, 205313), (179, 111259), (1147, 17363), (3007, 6623), (3589, 5549)]