21372808

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{3833}}^1$

素因数の和:3897

約数の個数: 32

約数和(自身を含む): 43477560

約数和(自身を除く): 22104752

約数列:

[1, 2, 4, 8, 17, 34, 41, 68, 82, 136, 164, 328, 697, 1394, 2788, 3833, 5576, 7666, 15332, 30664, 65161, 130322, 157153, 260644, 314306, 521288, 628612, 1257224, 2671601, 5343202, 10686404, 21372808]

約数ペア:

[(1, 21372808), (2, 10686404), (4, 5343202), (8, 2671601), (17, 1257224), (34, 628612), (41, 521288), (68, 314306), (82, 260644), (136, 157153), (164, 130322), (328, 65161), (697, 30664), (1394, 15332), (2788, 7666), (3833, 5576)]