18786055

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 25090560

約数和(自身を除く): 6304505

約数列:

[1, 5, 23, 29, 43, 115, 131, 145, 215, 655, 667, 989, 1247, 3013, 3335, 3799, 4945, 5633, 6235, 15065, 18995, 28165, 28681, 87377, 129559, 143405, 163357, 436885, 647795, 816785, 3757211, 18786055]

約数ペア:

[(1, 18786055), (5, 3757211), (23, 816785), (29, 647795), (43, 436885), (115, 163357), (131, 143405), (145, 129559), (215, 87377), (655, 28681), (667, 28165), (989, 18995), (1247, 15065), (3013, 6235), (3335, 5633), (3799, 4945)]