19719184

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72497}}^1$

素因数の和:72522

約数の個数: 20

約数和(自身を含む): 40453884

約数和(自身を除く): 20734700

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72497, 144994, 289988, 579976, 1159952, 1232449, 2464898, 4929796, 9859592, 19719184]

約数ペア:

[(1, 19719184), (2, 9859592), (4, 4929796), (8, 2464898), (16, 1232449), (17, 1159952), (34, 579976), (68, 289988), (136, 144994), (272, 72497)]