81621440

素因数分解:

$2^6\times 5^1\times {\mathrm{379}}^1\times {\mathrm{673}}^1$

素因数の和:1069

約数の個数: 56

約数和(自身を含む): 195163440

約数和(自身を除く): 113542000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 379, 673, 758, 1346, 1516, 1895, 2692, 3032, 3365, 3790, 5384, 6064, 6730, 7580, 10768, 12128, 13460, 15160, 21536, 24256, 26920, 30320, 43072, 53840, 60640, 107680, 121280, 215360, 255067, 510134, 1020268, 1275335, 2040536, 2550670, 4081072, 5101340, 8162144, 10202680, 16324288, 20405360, 40810720, 81621440]

約数ペア:

[(1, 81621440), (2, 40810720), (4, 20405360), (5, 16324288), (8, 10202680), (10, 8162144), (16, 5101340), (20, 4081072), (32, 2550670), (40, 2040536), (64, 1275335), (80, 1020268), (160, 510134), (320, 255067), (379, 215360), (673, 121280), (758, 107680), (1346, 60640), (1516, 53840), (1895, 43072), (2692, 30320), (3032, 26920), (3365, 24256), (3790, 21536), (5384, 15160), (6064, 13460), (6730, 12128), (7580, 10768)]