28528929

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{821}}^1$

素因数の和:860

約数の個数: 48

約数和(自身を含む): 50266944

約数和(自身を除く): 21738015

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 143, 243, 297, 351, 429, 821, 891, 1053, 1287, 2463, 2673, 3159, 3861, 7389, 9031, 10673, 11583, 22167, 27093, 32019, 34749, 66501, 81279, 96057, 117403, 199503, 243837, 288171, 352209, 731511, 864513, 1056627, 2194533, 2593539, 3169881, 9509643, 28528929]

約数ペア:

[(1, 28528929), (3, 9509643), (9, 3169881), (11, 2593539), (13, 2194533), (27, 1056627), (33, 864513), (39, 731511), (81, 352209), (99, 288171), (117, 243837), (143, 199503), (243, 117403), (297, 96057), (351, 81279), (429, 66501), (821, 34749), (891, 32019), (1053, 27093), (1287, 22167), (2463, 11583), (2673, 10673), (3159, 9031), (3861, 7389)]