20689784

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1723}}^1$

素因数の和:1827

約数の個数: 32

約数和(自身を含む): 41376000

約数和(自身を除く): 20686216

約数列:

[1, 2, 4, 8, 19, 38, 76, 79, 152, 158, 316, 632, 1501, 1723, 3002, 3446, 6004, 6892, 12008, 13784, 32737, 65474, 130948, 136117, 261896, 272234, 544468, 1088936, 2586223, 5172446, 10344892, 20689784]

約数ペア:

[(1, 20689784), (2, 10344892), (4, 5172446), (8, 2586223), (19, 1088936), (38, 544468), (76, 272234), (79, 261896), (152, 136117), (158, 130948), (316, 65474), (632, 32737), (1501, 13784), (1723, 12008), (3002, 6892), (3446, 6004)]