641888

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{1543}}^1$

素因数の和:1566

約数の個数: 24

約数和(自身を含む): 1361808

約数和(自身を除く): 719920

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 1543, 3086, 6172, 12344, 20059, 24688, 40118, 49376, 80236, 160472, 320944, 641888]

約数ペア:

[(1, 641888), (2, 320944), (4, 160472), (8, 80236), (13, 49376), (16, 40118), (26, 24688), (32, 20059), (52, 12344), (104, 6172), (208, 3086), (416, 1543)]