19976139

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:281

約数の個数: 40

約数和(自身を含む): 32147280

約数和(自身を除く): 12171141

約数列:

[1, 3, 9, 17, 27, 51, 81, 89, 153, 163, 267, 459, 489, 801, 1377, 1467, 1513, 2403, 2771, 4401, 4539, 7209, 8313, 13203, 13617, 14507, 24939, 40851, 43521, 74817, 122553, 130563, 224451, 246619, 391689, 739857, 1175067, 2219571, 6658713, 19976139]

約数ペア:

[(1, 19976139), (3, 6658713), (9, 2219571), (17, 1175067), (27, 739857), (51, 391689), (81, 246619), (89, 224451), (153, 130563), (163, 122553), (267, 74817), (459, 43521), (489, 40851), (801, 24939), (1377, 14507), (1467, 13617), (1513, 13203), (2403, 8313), (2771, 7209), (4401, 4539)]