21458240

素因数分解:

$2^6\times 5^1\times {\mathrm{67057}}^1$

素因数の和:67074

約数の個数: 28

約数和(自身を含む): 51098196

約数和(自身を除く): 29639956

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67057, 134114, 268228, 335285, 536456, 670570, 1072912, 1341140, 2145824, 2682280, 4291648, 5364560, 10729120, 21458240]

約数ペア:

[(1, 21458240), (2, 10729120), (4, 5364560), (5, 4291648), (8, 2682280), (10, 2145824), (16, 1341140), (20, 1072912), (32, 670570), (40, 536456), (64, 335285), (80, 268228), (160, 134114), (320, 67057)]