216444880

素因数分解:

$2^4\times 5^1\times {\mathrm{2705561}}^1$

素因数の和:2705574

約数の個数: 20

約数和(自身を含む): 503234532

約数和(自身を除く): 286789652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2705561, 5411122, 10822244, 13527805, 21644488, 27055610, 43288976, 54111220, 108222440, 216444880]

約数ペア:

[(1, 216444880), (2, 108222440), (4, 54111220), (5, 43288976), (8, 27055610), (10, 21644488), (16, 13527805), (20, 10822244), (40, 5411122), (80, 2705561)]