21970553

素因数分解:

${\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:448

約数の個数: 16

約数和(自身を含む): 24641280

約数和(自身を除く): 2670727

約数列:

[1, 11, 61, 137, 239, 671, 1507, 2629, 8357, 14579, 32743, 91927, 160369, 360173, 1997323, 21970553]

約数ペア:

[(1, 21970553), (11, 1997323), (61, 360173), (137, 160369), (239, 91927), (671, 32743), (1507, 14579), (2629, 8357)]