19890647

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:446

約数の個数: 16

約数和(自身を含む): 23232000

約数和(自身を除く): 3341353

約数列:

[1, 7, 109, 131, 199, 763, 917, 1393, 14279, 21691, 26069, 99953, 151837, 182483, 2841521, 19890647]

約数ペア:

[(1, 19890647), (7, 2841521), (109, 182483), (131, 151837), (199, 99953), (763, 26069), (917, 21691), (1393, 14279)]