213465

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1$

素因数の和:141

約数の個数: 32

約数和(自身を含む): 414720

約数和(自身を除く): 201255

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 107, 133, 285, 321, 399, 535, 665, 749, 1605, 1995, 2033, 2247, 3745, 6099, 10165, 11235, 14231, 30495, 42693, 71155, 213465]

約数ペア:

[(1, 213465), (3, 71155), (5, 42693), (7, 30495), (15, 14231), (19, 11235), (21, 10165), (35, 6099), (57, 3745), (95, 2247), (105, 2033), (107, 1995), (133, 1605), (285, 749), (321, 665), (399, 535)]