28250901

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{47}}^2$

素因数の和:143

約数の個数: 54

約数和(自身を含む): 50173110

約数和(自身を除く): 21922209

約数列:

[1, 3, 7, 9, 21, 29, 47, 49, 63, 87, 141, 147, 203, 261, 329, 423, 441, 609, 987, 1363, 1421, 1827, 2209, 2303, 2961, 4089, 4263, 6627, 6909, 9541, 12267, 12789, 15463, 19881, 20727, 28623, 46389, 64061, 66787, 85869, 108241, 139167, 192183, 200361, 324723, 448427, 576549, 601083, 974169, 1345281, 3138989, 4035843, 9416967, 28250901]

約数ペア:

[(1, 28250901), (3, 9416967), (7, 4035843), (9, 3138989), (21, 1345281), (29, 974169), (47, 601083), (49, 576549), (63, 448427), (87, 324723), (141, 200361), (147, 192183), (203, 139167), (261, 108241), (329, 85869), (423, 66787), (441, 64061), (609, 46389), (987, 28623), (1363, 20727), (1421, 19881), (1827, 15463), (2209, 12789), (2303, 12267), (2961, 9541), (4089, 6909), (4263, 6627)]