28253745

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{947}}^1$

素因数の和:991

約数の個数: 64

約数和(自身を含む): 57335040

約数和(自身を除く): 29081295

約数列:

[1, 3, 5, 9, 13, 15, 17, 27, 39, 45, 51, 65, 85, 117, 135, 153, 195, 221, 255, 351, 459, 585, 663, 765, 947, 1105, 1755, 1989, 2295, 2841, 3315, 4735, 5967, 8523, 9945, 12311, 14205, 16099, 25569, 29835, 36933, 42615, 48297, 61555, 80495, 110799, 127845, 144891, 184665, 209287, 241485, 332397, 434673, 553995, 627861, 724455, 1046435, 1661985, 1883583, 2173365, 3139305, 5650749, 9417915, 28253745]

約数ペア:

[(1, 28253745), (3, 9417915), (5, 5650749), (9, 3139305), (13, 2173365), (15, 1883583), (17, 1661985), (27, 1046435), (39, 724455), (45, 627861), (51, 553995), (65, 434673), (85, 332397), (117, 241485), (135, 209287), (153, 184665), (195, 144891), (221, 127845), (255, 110799), (351, 80495), (459, 61555), (585, 48297), (663, 42615), (765, 36933), (947, 29835), (1105, 25569), (1755, 16099), (1989, 14205), (2295, 12311), (2841, 9945), (3315, 8523), (4735, 5967)]