388889764

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{20743}}^1$

素因数の和:20899

約数の個数: 24

約数和(自身を含む): 702806720

約数和(自身を除く): 313916956

約数列:

[1, 2, 4, 43, 86, 109, 172, 218, 436, 4687, 9374, 18748, 20743, 41486, 82972, 891949, 1783898, 2260987, 3567796, 4521974, 9043948, 97222441, 194444882, 388889764]

約数ペア:

[(1, 388889764), (2, 194444882), (4, 97222441), (43, 9043948), (86, 4521974), (109, 3567796), (172, 2260987), (218, 1783898), (436, 891949), (4687, 82972), (9374, 41486), (18748, 20743)]