19807856

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72823}}^1$

素因数の和:72848

約数の個数: 20

約数和(自身を含む): 40635792

約数和(自身を除く): 20827936

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72823, 145646, 291292, 582584, 1165168, 1237991, 2475982, 4951964, 9903928, 19807856]

約数ペア:

[(1, 19807856), (2, 9903928), (4, 4951964), (8, 2475982), (16, 1237991), (17, 1165168), (34, 582584), (68, 291292), (136, 145646), (272, 72823)]