21365560

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1823}}^1$

素因数の和:2127

約数の個数: 32

約数和(自身を含む): 48263040

約数和(自身を除く): 26897480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 1823, 2344, 2930, 3646, 5860, 7292, 9115, 11720, 14584, 18230, 36460, 72920, 534139, 1068278, 2136556, 2670695, 4273112, 5341390, 10682780, 21365560]

約数ペア:

[(1, 21365560), (2, 10682780), (4, 5341390), (5, 4273112), (8, 2670695), (10, 2136556), (20, 1068278), (40, 534139), (293, 72920), (586, 36460), (1172, 18230), (1465, 14584), (1823, 11720), (2344, 9115), (2930, 7292), (3646, 5860)]