245385

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:78

約数の個数: 48

約数和(自身を含む): 524160

約数和(自身を除く): 278775

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 41, 45, 57, 63, 95, 105, 123, 133, 171, 205, 285, 287, 315, 369, 399, 615, 665, 779, 855, 861, 1197, 1435, 1845, 1995, 2337, 2583, 3895, 4305, 5453, 5985, 7011, 11685, 12915, 16359, 27265, 35055, 49077, 81795, 245385]

約数ペア:

[(1, 245385), (3, 81795), (5, 49077), (7, 35055), (9, 27265), (15, 16359), (19, 12915), (21, 11685), (35, 7011), (41, 5985), (45, 5453), (57, 4305), (63, 3895), (95, 2583), (105, 2337), (123, 1995), (133, 1845), (171, 1435), (205, 1197), (285, 861), (287, 855), (315, 779), (369, 665), (399, 615)]