19516995

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 35830080

約数和(自身を除く): 16313085

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 109, 115, 173, 207, 327, 345, 519, 545, 865, 981, 1035, 1557, 1635, 2507, 2595, 3979, 4905, 7521, 7785, 11937, 12535, 18857, 19895, 22563, 35811, 37605, 56571, 59685, 94285, 112815, 169713, 179055, 282855, 433711, 848565, 1301133, 2168555, 3903399, 6505665, 19516995]

約数ペア:

[(1, 19516995), (3, 6505665), (5, 3903399), (9, 2168555), (15, 1301133), (23, 848565), (45, 433711), (69, 282855), (109, 179055), (115, 169713), (173, 112815), (207, 94285), (327, 59685), (345, 56571), (519, 37605), (545, 35811), (865, 22563), (981, 19895), (1035, 18857), (1557, 12535), (1635, 11937), (2507, 7785), (2595, 7521), (3979, 4905)]