20605390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5113}}^1$

素因数の和:5164

約数の個数: 32

約数和(自身を含む): 41239296

約数和(自身を除く): 20633906

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5113, 10226, 25565, 51130, 66469, 132938, 158503, 317006, 332345, 664690, 792515, 1585030, 2060539, 4121078, 10302695, 20605390]

約数ペア:

[(1, 20605390), (2, 10302695), (5, 4121078), (10, 2060539), (13, 1585030), (26, 792515), (31, 664690), (62, 332345), (65, 317006), (130, 158503), (155, 132938), (310, 66469), (403, 51130), (806, 25565), (2015, 10226), (4030, 5113)]