20571908

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{38669}}^1$

素因数の和:38699

約数の個数: 24

約数和(自身を含む): 43310400

約数和(自身を除く): 22738492

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 38669, 77338, 154676, 270683, 541366, 734711, 1082732, 1469422, 2938844, 5142977, 10285954, 20571908]

約数ペア:

[(1, 20571908), (2, 10285954), (4, 5142977), (7, 2938844), (14, 1469422), (19, 1082732), (28, 734711), (38, 541366), (76, 270683), (133, 154676), (266, 77338), (532, 38669)]