19993808

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{54331}}^1$

素因数の和:54362

約数の個数: 20

約数和(自身を含む): 40423008

約数和(自身を除く): 20429200

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 54331, 108662, 217324, 434648, 869296, 1249613, 2499226, 4998452, 9996904, 19993808]

約数ペア:

[(1, 19993808), (2, 9996904), (4, 4998452), (8, 2499226), (16, 1249613), (23, 869296), (46, 434648), (92, 217324), (184, 108662), (368, 54331)]