19157965

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2731}}^1$

素因数の和:2820

約数の個数: 16

約数和(自身を含む): 24391296

約数和(自身を除く): 5233331

約数列:

[1, 5, 23, 61, 115, 305, 1403, 2731, 7015, 13655, 62813, 166591, 314065, 832955, 3831593, 19157965]

約数ペア:

[(1, 19157965), (5, 3831593), (23, 832955), (61, 314065), (115, 166591), (305, 62813), (1403, 13655), (2731, 7015)]