21548480

素因数分解:

$2^6\times 5^1\times {\mathrm{67339}}^1$

素因数の和:67356

約数の個数: 28

約数和(自身を含む): 51313080

約数和(自身を除く): 29764600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67339, 134678, 269356, 336695, 538712, 673390, 1077424, 1346780, 2154848, 2693560, 4309696, 5387120, 10774240, 21548480]

約数ペア:

[(1, 21548480), (2, 10774240), (4, 5387120), (5, 4309696), (8, 2693560), (10, 2154848), (16, 1346780), (20, 1077424), (32, 673390), (40, 538712), (64, 336695), (80, 269356), (160, 134678), (320, 67339)]