19935728

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40193}}^1$

素因数の和:40232

約数の個数: 20

約数和(自身を含む): 39872448

約数和(自身を除く): 19936720

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40193, 80386, 160772, 321544, 643088, 1245983, 2491966, 4983932, 9967864, 19935728]

約数ペア:

[(1, 19935728), (2, 9967864), (4, 4983932), (8, 2491966), (16, 1245983), (31, 643088), (62, 321544), (124, 160772), (248, 80386), (496, 40193)]