521306680

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{33503}}^1$

素因数の和:33903

約数の個数: 32

約数和(自身を含む): 1175990400

約数和(自身を除く): 654683720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 7780, 15560, 33503, 67006, 134012, 167515, 268024, 335030, 670060, 1340120, 13032667, 26065334, 52130668, 65163335, 104261336, 130326670, 260653340, 521306680]

約数ペア:

[(1, 521306680), (2, 260653340), (4, 130326670), (5, 104261336), (8, 65163335), (10, 52130668), (20, 26065334), (40, 13032667), (389, 1340120), (778, 670060), (1556, 335030), (1945, 268024), (3112, 167515), (3890, 134012), (7780, 67006), (15560, 33503)]