19858345

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 26246592

約数和(自身を除く): 6388247

約数列:

[1, 5, 13, 65, 71, 169, 331, 355, 845, 923, 1655, 4303, 4615, 11999, 21515, 23501, 55939, 59995, 117505, 279695, 305513, 1527565, 3971669, 19858345]

約数ペア:

[(1, 19858345), (5, 3971669), (13, 1527565), (65, 305513), (71, 279695), (169, 117505), (331, 59995), (355, 55939), (845, 23501), (923, 21515), (1655, 11999), (4303, 4615)]