18912556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{821}}^1$

素因数の和:1281

約数の個数: 24

約数和(自身を含む): 35766864

約数和(自身を除く): 16854308

約数列:

[1, 2, 4, 13, 26, 52, 443, 821, 886, 1642, 1772, 3284, 5759, 10673, 11518, 21346, 23036, 42692, 363703, 727406, 1454812, 4728139, 9456278, 18912556]

約数ペア:

[(1, 18912556), (2, 9456278), (4, 4728139), (13, 1454812), (26, 727406), (52, 363703), (443, 42692), (821, 23036), (886, 21346), (1642, 11518), (1772, 10673), (3284, 5759)]