2166440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1321}}^1$

素因数の和:1373

約数の個数: 32

約数和(自身を含む): 4997160

約数和(自身を除く): 2830720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1321, 1640, 2642, 5284, 6605, 10568, 13210, 26420, 52840, 54161, 108322, 216644, 270805, 433288, 541610, 1083220, 2166440]

約数ペア:

[(1, 2166440), (2, 1083220), (4, 541610), (5, 433288), (8, 270805), (10, 216644), (20, 108322), (40, 54161), (41, 52840), (82, 26420), (164, 13210), (205, 10568), (328, 6605), (410, 5284), (820, 2642), (1321, 1640)]