21000228236

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{403850543}}^1$

素因数の和:403850560

約数の個数: 12

約数和(自身を含む): 39577353312

約数和(自身を除く): 18577125076

約数列:

[1, 2, 4, 13, 26, 52, 403850543, 807701086, 1615402172, 5250057059, 10500114118, 21000228236]

約数ペア:

[(1, 21000228236), (2, 10500114118), (4, 5250057059), (13, 1615402172), (26, 807701086), (52, 403850543)]