18739984

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{68897}}^1$

素因数の和:68922

約数の個数: 20

約数和(自身を含む): 38445084

約数和(自身を除く): 19705100

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 68897, 137794, 275588, 551176, 1102352, 1171249, 2342498, 4684996, 9369992, 18739984]

約数ペア:

[(1, 18739984), (2, 9369992), (4, 4684996), (8, 2342498), (16, 1171249), (17, 1102352), (34, 551176), (68, 275588), (136, 137794), (272, 68897)]