21978928153

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{4903}}^1\times {\mathrm{49261}}^1$

素因数の和:54184

約数の個数: 16

約数和(自身を含む): 27057054976

約数和(自身を除く): 5078126823

約数列:

[1, 7, 13, 91, 4903, 34321, 49261, 63739, 344827, 446173, 640393, 4482751, 241526683, 1690686781, 3139846879, 21978928153]

約数ペア:

[(1, 21978928153), (7, 3139846879), (13, 1690686781), (91, 241526683), (4903, 4482751), (34321, 640393), (49261, 446173), (63739, 344827)]