2658440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1621}}^1$

素因数の和:1673

約数の個数: 32

約数和(自身を含む): 6131160

約数和(自身を除く): 3472720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1621, 1640, 3242, 6484, 8105, 12968, 16210, 32420, 64840, 66461, 132922, 265844, 332305, 531688, 664610, 1329220, 2658440]

約数ペア:

[(1, 2658440), (2, 1329220), (4, 664610), (5, 531688), (8, 332305), (10, 265844), (20, 132922), (40, 66461), (41, 64840), (82, 32420), (164, 16210), (205, 12968), (328, 8105), (410, 6484), (820, 3242), (1621, 1640)]