55780880

素因数分解:

$2^4\times 5^1\times {\mathrm{697261}}^1$

素因数の和:697274

約数の個数: 20

約数和(自身を含む): 129690732

約数和(自身を除く): 73909852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 697261, 1394522, 2789044, 3486305, 5578088, 6972610, 11156176, 13945220, 27890440, 55780880]

約数ペア:

[(1, 55780880), (2, 27890440), (4, 13945220), (5, 11156176), (8, 6972610), (10, 5578088), (16, 3486305), (20, 2789044), (40, 1394522), (80, 697261)]