19859344

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40039}}^1$

素因数の和:40078

約数の個数: 20

約数和(自身を含む): 39719680

約数和(自身を除く): 19860336

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40039, 80078, 160156, 320312, 640624, 1241209, 2482418, 4964836, 9929672, 19859344]

約数ペア:

[(1, 19859344), (2, 9929672), (4, 4964836), (8, 2482418), (16, 1241209), (31, 640624), (62, 320312), (124, 160156), (248, 80078), (496, 40039)]