21670870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12823}}^1$

素因数の和:12856

約数の個数: 24

約数和(自身を含む): 42242256

約数和(自身を除く): 20571386

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12823, 25646, 64115, 128230, 166699, 333398, 833495, 1666990, 2167087, 4334174, 10835435, 21670870]

約数ペア:

[(1, 21670870), (2, 10835435), (5, 4334174), (10, 2167087), (13, 1666990), (26, 833495), (65, 333398), (130, 166699), (169, 128230), (338, 64115), (845, 25646), (1690, 12823)]