18939976

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{1571}}^1$

素因数の和:1725

約数の個数: 32

約数和(自身を含む): 39048480

約数和(自身を除く): 20108504

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 137, 274, 548, 1096, 1507, 1571, 3014, 3142, 6028, 6284, 12056, 12568, 17281, 34562, 69124, 138248, 215227, 430454, 860908, 1721816, 2367497, 4734994, 9469988, 18939976]

約数ペア:

[(1, 18939976), (2, 9469988), (4, 4734994), (8, 2367497), (11, 1721816), (22, 860908), (44, 430454), (88, 215227), (137, 138248), (274, 69124), (548, 34562), (1096, 17281), (1507, 12568), (1571, 12056), (3014, 6284), (3142, 6028)]