19910690

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15199}}^1$

素因数の和:15337

約数の個数: 16

約数和(自身を含む): 36115200

約数和(自身を除く): 16204510

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 15199, 30398, 75995, 151990, 1991069, 3982138, 9955345, 19910690]

約数ペア:

[(1, 19910690), (2, 9955345), (5, 3982138), (10, 1991069), (131, 151990), (262, 75995), (655, 30398), (1310, 15199)]