20155784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{1009}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 41450400

約数和(自身を除く): 21294616

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 227, 454, 908, 1009, 1816, 2018, 2497, 4036, 4994, 8072, 9988, 11099, 19976, 22198, 44396, 88792, 229043, 458086, 916172, 1832344, 2519473, 5038946, 10077892, 20155784]

約数ペア:

[(1, 20155784), (2, 10077892), (4, 5038946), (8, 2519473), (11, 1832344), (22, 916172), (44, 458086), (88, 229043), (227, 88792), (454, 44396), (908, 22198), (1009, 19976), (1816, 11099), (2018, 9988), (2497, 8072), (4036, 4994)]