19799995

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 26484480

約数和(自身を除く): 6684485

約数列:

[1, 5, 19, 37, 43, 95, 131, 185, 215, 655, 703, 817, 1591, 2489, 3515, 4085, 4847, 5633, 7955, 12445, 24235, 28165, 30229, 92093, 107027, 151145, 208421, 460465, 535135, 1042105, 3959999, 19799995]

約数ペア:

[(1, 19799995), (5, 3959999), (19, 1042105), (37, 535135), (43, 460465), (95, 208421), (131, 151145), (185, 107027), (215, 92093), (655, 30229), (703, 28165), (817, 24235), (1591, 12445), (2489, 7955), (3515, 5633), (4085, 4847)]