81775880

素因数分解:

$2^3\times 5^1\times {\mathrm{1373}}^1\times {\mathrm{1489}}^1$

素因数の和:2873

約数の個数: 32

約数和(自身を含む): 184253400

約数和(自身を除く): 102477520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1373, 1489, 2746, 2978, 5492, 5956, 6865, 7445, 10984, 11912, 13730, 14890, 27460, 29780, 54920, 59560, 2044397, 4088794, 8177588, 10221985, 16355176, 20443970, 40887940, 81775880]

約数ペア:

[(1, 81775880), (2, 40887940), (4, 20443970), (5, 16355176), (8, 10221985), (10, 8177588), (20, 4088794), (40, 2044397), (1373, 59560), (1489, 54920), (2746, 29780), (2978, 27460), (5492, 14890), (5956, 13730), (6865, 11912), (7445, 10984)]