18172231

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 24477696

約数和(自身を除く): 6305465

約数列:

[1, 7, 11, 23, 31, 77, 161, 217, 253, 331, 341, 713, 1771, 2317, 2387, 3641, 4991, 7613, 7843, 10261, 25487, 53291, 54901, 71827, 83743, 112871, 236003, 586201, 790097, 1652021, 2596033, 18172231]

約数ペア:

[(1, 18172231), (7, 2596033), (11, 1652021), (23, 790097), (31, 586201), (77, 236003), (161, 112871), (217, 83743), (253, 71827), (331, 54901), (341, 53291), (713, 25487), (1771, 10261), (2317, 7843), (2387, 7613), (3641, 4991)]