20160405

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 36391680

約数和(自身を除く): 16231275

約数列:

[1, 3, 5, 9, 15, 45, 53, 79, 107, 159, 237, 265, 321, 395, 477, 535, 711, 795, 963, 1185, 1605, 2385, 3555, 4187, 4815, 5671, 8453, 12561, 17013, 20935, 25359, 28355, 37683, 42265, 51039, 62805, 76077, 85065, 126795, 188415, 255195, 380385, 448009, 1344027, 2240045, 4032081, 6720135, 20160405]

約数ペア:

[(1, 20160405), (3, 6720135), (5, 4032081), (9, 2240045), (15, 1344027), (45, 448009), (53, 380385), (79, 255195), (107, 188415), (159, 126795), (237, 85065), (265, 76077), (321, 62805), (395, 51039), (477, 42265), (535, 37683), (711, 28355), (795, 25359), (963, 20935), (1185, 17013), (1605, 12561), (2385, 8453), (3555, 5671), (4187, 4815)]