28221795

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{12799}}^1$

素因数の和:12824

約数の個数: 36

約数和(自身を含む): 56908800

約数和(自身を除く): 28687005

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 12799, 38397, 63995, 89593, 115191, 191985, 268779, 447965, 575955, 627151, 806337, 1343895, 1881453, 3135755, 4031685, 5644359, 9407265, 28221795]

約数ペア:

[(1, 28221795), (3, 9407265), (5, 5644359), (7, 4031685), (9, 3135755), (15, 1881453), (21, 1343895), (35, 806337), (45, 627151), (49, 575955), (63, 447965), (105, 268779), (147, 191985), (245, 115191), (315, 89593), (441, 63995), (735, 38397), (2205, 12799)]