19968195

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{7877}}^1$

素因数の和:7911

約数の個数: 24

約数和(自身を含む): 34600176

約数和(自身を除く): 14631981

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 7877, 23631, 39385, 102401, 118155, 307203, 512005, 1331213, 1536015, 3993639, 6656065, 19968195]

約数ペア:

[(1, 19968195), (3, 6656065), (5, 3993639), (13, 1536015), (15, 1331213), (39, 512005), (65, 307203), (169, 118155), (195, 102401), (507, 39385), (845, 23631), (2535, 7877)]