20817784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{200171}}^1$

素因数の和:200190

約数の個数: 16

約数和(自身を含む): 42036120

約数和(自身を除く): 21218336

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 200171, 400342, 800684, 1601368, 2602223, 5204446, 10408892, 20817784]

約数ペア:

[(1, 20817784), (2, 10408892), (4, 5204446), (8, 2602223), (13, 1601368), (26, 800684), (52, 400342), (104, 200171)]