19531816

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 37558080

約数和(自身を除く): 18026264

約数列:

[1, 2, 4, 8, 71, 137, 142, 251, 274, 284, 502, 548, 568, 1004, 1096, 2008, 9727, 17821, 19454, 34387, 35642, 38908, 68774, 71284, 77816, 137548, 142568, 275096, 2441477, 4882954, 9765908, 19531816]

約数ペア:

[(1, 19531816), (2, 9765908), (4, 4882954), (8, 2441477), (71, 275096), (137, 142568), (142, 137548), (251, 77816), (274, 71284), (284, 68774), (502, 38908), (548, 35642), (568, 34387), (1004, 19454), (1096, 17821), (2008, 9727)]