21000339376

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12041479}}^1$

素因数の和:12041596

約数の個数: 20

約数和(自身を含む): 41061446800

約数和(自身を除く): 20061107424

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12041479, 24082958, 48165916, 96331832, 192663664, 1312521211, 2625042422, 5250084844, 10500169688, 21000339376]

約数ペア:

[(1, 21000339376), (2, 10500169688), (4, 5250084844), (8, 2625042422), (16, 1312521211), (109, 192663664), (218, 96331832), (436, 48165916), (872, 24082958), (1744, 12041479)]