19712877

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 29082240

約数和(自身を除く): 9369363

約数列:

[1, 3, 17, 43, 51, 89, 101, 129, 267, 303, 731, 1513, 1717, 2193, 3827, 4343, 4539, 5151, 8989, 11481, 13029, 26967, 65059, 73831, 152813, 195177, 221493, 386527, 458439, 1159581, 6570959, 19712877]

約数ペア:

[(1, 19712877), (3, 6570959), (17, 1159581), (43, 458439), (51, 386527), (89, 221493), (101, 195177), (129, 152813), (267, 73831), (303, 65059), (731, 26967), (1513, 13029), (1717, 11481), (2193, 8989), (3827, 5151), (4343, 4539)]