81963560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{292727}}^1$

素因数の和:292745

約数の個数: 32

約数和(自身を含む): 210764160

約数和(自身を除く): 128800600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 292727, 585454, 1170908, 1463635, 2049089, 2341816, 2927270, 4098178, 5854540, 8196356, 10245445, 11709080, 16392712, 20490890, 40981780, 81963560]

約数ペア:

[(1, 81963560), (2, 40981780), (4, 20490890), (5, 16392712), (7, 11709080), (8, 10245445), (10, 8196356), (14, 5854540), (20, 4098178), (28, 2927270), (35, 2341816), (40, 2049089), (56, 1463635), (70, 1170908), (140, 585454), (280, 292727)]