20975344

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3253}}^1$

素因数の和:3305

約数の個数: 40

約数和(自身を含む): 45191552

約数和(自身を除く): 24216208

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 3253, 6448, 6506, 13012, 26024, 42289, 52048, 84578, 100843, 169156, 201686, 338312, 403372, 676624, 806744, 1310959, 1613488, 2621918, 5243836, 10487672, 20975344]

約数ペア:

[(1, 20975344), (2, 10487672), (4, 5243836), (8, 2621918), (13, 1613488), (16, 1310959), (26, 806744), (31, 676624), (52, 403372), (62, 338312), (104, 201686), (124, 169156), (208, 100843), (248, 84578), (403, 52048), (496, 42289), (806, 26024), (1612, 13012), (3224, 6506), (3253, 6448)]