19956821

素因数分解:

${\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:404

約数の個数: 16

約数和(自身を含む): 21754560

約数和(自身を除く): 1797739

約数列:

[1, 19, 61, 67, 257, 1159, 1273, 4087, 4883, 15677, 17219, 77653, 297863, 327161, 1050359, 19956821]

約数ペア:

[(1, 19956821), (19, 1050359), (61, 327161), (67, 297863), (257, 77653), (1159, 17219), (1273, 15677), (4087, 4883)]