20406375

素因数分解:

$3^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1$

素因数の和:146

約数の個数: 96

約数和(自身を含む): 42928704

約数和(自身を除く): 22522329

約数列:

[1, 3, 5, 9, 11, 15, 17, 25, 33, 45, 51, 55, 75, 85, 97, 99, 125, 153, 165, 187, 225, 255, 275, 291, 375, 425, 485, 495, 561, 765, 825, 873, 935, 1067, 1125, 1275, 1375, 1455, 1649, 1683, 2125, 2425, 2475, 2805, 3201, 3825, 4125, 4365, 4675, 4947, 5335, 6375, 7275, 8245, 8415, 9603, 12125, 12375, 14025, 14841, 16005, 18139, 19125, 21825, 23375, 24735, 26675, 36375, 41225, 42075, 48015, 54417, 70125, 74205, 80025, 90695, 109125, 123675, 133375, 163251, 206125, 210375, 240075, 272085, 371025, 400125, 453475, 618375, 816255, 1200375, 1360425, 1855125, 2267375, 4081275, 6802125, 20406375]

約数ペア:

[(1, 20406375), (3, 6802125), (5, 4081275), (9, 2267375), (11, 1855125), (15, 1360425), (17, 1200375), (25, 816255), (33, 618375), (45, 453475), (51, 400125), (55, 371025), (75, 272085), (85, 240075), (97, 210375), (99, 206125), (125, 163251), (153, 133375), (165, 123675), (187, 109125), (225, 90695), (255, 80025), (275, 74205), (291, 70125), (375, 54417), (425, 48015), (485, 42075), (495, 41225), (561, 36375), (765, 26675), (825, 24735), (873, 23375), (935, 21825), (1067, 19125), (1125, 18139), (1275, 16005), (1375, 14841), (1455, 14025), (1649, 12375), (1683, 12125), (2125, 9603), (2425, 8415), (2475, 8245), (2805, 7275), (3201, 6375), (3825, 5335), (4125, 4947), (4365, 4675)]