28871580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1237}}^1$

素因数の和:1638

約数の個数: 48

約数和(自身を含む): 81113760

約数和(自身を除く): 52242180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 389, 778, 1167, 1237, 1556, 1945, 2334, 2474, 3711, 3890, 4668, 4948, 5835, 6185, 7422, 7780, 11670, 12370, 14844, 18555, 23340, 24740, 37110, 74220, 481193, 962386, 1443579, 1924772, 2405965, 2887158, 4811930, 5774316, 7217895, 9623860, 14435790, 28871580]

約数ペア:

[(1, 28871580), (2, 14435790), (3, 9623860), (4, 7217895), (5, 5774316), (6, 4811930), (10, 2887158), (12, 2405965), (15, 1924772), (20, 1443579), (30, 962386), (60, 481193), (389, 74220), (778, 37110), (1167, 24740), (1237, 23340), (1556, 18555), (1945, 14844), (2334, 12370), (2474, 11670), (3711, 7780), (3890, 7422), (4668, 6185), (4948, 5835)]