20159025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 35872704

約数和(自身を除く): 15713679

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 97, 163, 255, 291, 425, 485, 489, 815, 1275, 1455, 1649, 2425, 2445, 2771, 4075, 4947, 7275, 8245, 8313, 12225, 13855, 15811, 24735, 41225, 41565, 47433, 69275, 79055, 123675, 207825, 237165, 268787, 395275, 806361, 1185825, 1343935, 4031805, 6719675, 20159025]

約数ペア:

[(1, 20159025), (3, 6719675), (5, 4031805), (15, 1343935), (17, 1185825), (25, 806361), (51, 395275), (75, 268787), (85, 237165), (97, 207825), (163, 123675), (255, 79055), (291, 69275), (425, 47433), (485, 41565), (489, 41225), (815, 24735), (1275, 15811), (1455, 13855), (1649, 12225), (2425, 8313), (2445, 8245), (2771, 7275), (4075, 4947)]