19845008

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{20333}}^1$

素因数の和:20402

約数の個数: 20

約数和(自身を含む): 39081948

約数和(自身を除く): 19236940

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 20333, 40666, 81332, 162664, 325328, 1240313, 2480626, 4961252, 9922504, 19845008]

約数ペア:

[(1, 19845008), (2, 9922504), (4, 4961252), (8, 2480626), (16, 1240313), (61, 325328), (122, 162664), (244, 81332), (488, 40666), (976, 20333)]