20347784

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{509}}^1$

素因数の和:797

約数の個数: 32

約数和(自身を含む): 40392000

約数和(自身を除く): 20044216

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 263, 509, 526, 1018, 1052, 2036, 2104, 4072, 4997, 9671, 9994, 19342, 19988, 38684, 39976, 77368, 133867, 267734, 535468, 1070936, 2543473, 5086946, 10173892, 20347784]

約数ペア:

[(1, 20347784), (2, 10173892), (4, 5086946), (8, 2543473), (19, 1070936), (38, 535468), (76, 267734), (152, 133867), (263, 77368), (509, 39976), (526, 38684), (1018, 19988), (1052, 19342), (2036, 9994), (2104, 9671), (4072, 4997)]