19972016

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{17581}}^1$

素因数の和:17660

約数の個数: 20

約数和(自身を含む): 39243024

約数和(自身を除く): 19271008

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 17581, 35162, 70324, 140648, 281296, 1248251, 2496502, 4993004, 9986008, 19972016]

約数ペア:

[(1, 19972016), (2, 9986008), (4, 4993004), (8, 2496502), (16, 1248251), (71, 281296), (142, 140648), (284, 70324), (568, 35162), (1136, 17581)]