638218132

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{1811}}^1\times {\mathrm{4637}}^1$

素因数の和:6471

約数の個数: 24

約数和(自身を含む): 1176567840

約数和(自身を除く): 538349708

約数列:

[1, 2, 4, 19, 38, 76, 1811, 3622, 4637, 7244, 9274, 18548, 34409, 68818, 88103, 137636, 176206, 352412, 8397607, 16795214, 33590428, 159554533, 319109066, 638218132]

約数ペア:

[(1, 638218132), (2, 319109066), (4, 159554533), (19, 33590428), (38, 16795214), (76, 8397607), (1811, 352412), (3622, 176206), (4637, 137636), (7244, 88103), (9274, 68818), (18548, 34409)]