16663880

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1621}}^1$

素因数の和:1889

約数の個数: 32

約数和(自身を含む): 37662840

約数和(自身を除く): 20998960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1621, 2056, 2570, 3242, 5140, 6484, 8105, 10280, 12968, 16210, 32420, 64840, 416597, 833194, 1666388, 2082985, 3332776, 4165970, 8331940, 16663880]

約数ペア:

[(1, 16663880), (2, 8331940), (4, 4165970), (5, 3332776), (8, 2082985), (10, 1666388), (20, 833194), (40, 416597), (257, 64840), (514, 32420), (1028, 16210), (1285, 12968), (1621, 10280), (2056, 8105), (2570, 6484), (3242, 5140)]