291264920

素因数分解:

$2^3\times 5^1\times {\mathrm{911}}^1\times {\mathrm{7993}}^1$

素因数の和:8915

約数の個数: 32

約数和(自身を含む): 656147520

約数和(自身を除く): 364882600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 911, 1822, 3644, 4555, 7288, 7993, 9110, 15986, 18220, 31972, 36440, 39965, 63944, 79930, 159860, 319720, 7281623, 14563246, 29126492, 36408115, 58252984, 72816230, 145632460, 291264920]

約数ペア:

[(1, 291264920), (2, 145632460), (4, 72816230), (5, 58252984), (8, 36408115), (10, 29126492), (20, 14563246), (40, 7281623), (911, 319720), (1822, 159860), (3644, 79930), (4555, 63944), (7288, 39965), (7993, 36440), (9110, 31972), (15986, 18220)]