19157721

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 29331456

約数和(自身を除く): 10173735

約数列:

[1, 3, 11, 31, 33, 61, 93, 183, 307, 341, 671, 921, 1023, 1891, 2013, 3377, 5673, 9517, 10131, 18727, 20801, 28551, 56181, 62403, 104687, 205997, 314061, 580537, 617991, 1741611, 6385907, 19157721]

約数ペア:

[(1, 19157721), (3, 6385907), (11, 1741611), (31, 617991), (33, 580537), (61, 314061), (93, 205997), (183, 104687), (307, 62403), (341, 56181), (671, 28551), (921, 20801), (1023, 18727), (1891, 10131), (2013, 9517), (3377, 5673)]