20398456

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{196139}}^1$

素因数の和:196158

約数の個数: 16

約数和(自身を含む): 41189400

約数和(自身を除く): 20790944

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 196139, 392278, 784556, 1569112, 2549807, 5099614, 10199228, 20398456]

約数ペア:

[(1, 20398456), (2, 10199228), (4, 5099614), (8, 2549807), (13, 1569112), (26, 784556), (52, 392278), (104, 196139)]