21958430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3187}}^1$

素因数の和:3260

約数の個数: 32

約数和(自身を含む): 43382304

約数和(自身を除く): 21423874

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3187, 3445, 6374, 6890, 15935, 31870, 41431, 82862, 168911, 207155, 337822, 414310, 844555, 1689110, 2195843, 4391686, 10979215, 21958430]

約数ペア:

[(1, 21958430), (2, 10979215), (5, 4391686), (10, 2195843), (13, 1689110), (26, 844555), (53, 414310), (65, 337822), (106, 207155), (130, 168911), (265, 82862), (530, 41431), (689, 31870), (1378, 15935), (3187, 6890), (3445, 6374)]