21696015

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5717}}^1$

素因数の和:5759

約数の個数: 32

約数和(自身を含む): 39522816

約数和(自身を除く): 17826801

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 5717, 17151, 28585, 62887, 85755, 131491, 188661, 314435, 394473, 657455, 943305, 1446401, 1972365, 4339203, 7232005, 21696015]

約数ペア:

[(1, 21696015), (3, 7232005), (5, 4339203), (11, 1972365), (15, 1446401), (23, 943305), (33, 657455), (55, 394473), (69, 314435), (115, 188661), (165, 131491), (253, 85755), (345, 62887), (759, 28585), (1265, 17151), (3795, 5717)]