19640456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{2689}}^1$

素因数の和:2789

約数の個数: 32

約数和(自身を含む): 40672800

約数和(自身を除く): 21032344

約数列:

[1, 2, 4, 8, 11, 22, 44, 83, 88, 166, 332, 664, 913, 1826, 2689, 3652, 5378, 7304, 10756, 21512, 29579, 59158, 118316, 223187, 236632, 446374, 892748, 1785496, 2455057, 4910114, 9820228, 19640456]

約数ペア:

[(1, 19640456), (2, 9820228), (4, 4910114), (8, 2455057), (11, 1785496), (22, 892748), (44, 446374), (83, 236632), (88, 223187), (166, 118316), (332, 59158), (664, 29579), (913, 21512), (1826, 10756), (2689, 7304), (3652, 5378)]