20911472

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{12689}}^1$

素因数の和:12800

約数の個数: 20

約数和(自身を含む): 40912560

約数和(自身を除く): 20001088

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 12689, 25378, 50756, 101512, 203024, 1306967, 2613934, 5227868, 10455736, 20911472]

約数ペア:

[(1, 20911472), (2, 10455736), (4, 5227868), (8, 2613934), (16, 1306967), (103, 203024), (206, 101512), (412, 50756), (824, 25378), (1648, 12689)]