19805816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{1063}}^1$

素因数の和:1223

約数の個数: 32

約数和(自身を含む): 39644640

約数和(自身を除く): 19838824

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 137, 274, 548, 1063, 1096, 2126, 2329, 4252, 4658, 8504, 9316, 18071, 18632, 36142, 72284, 144568, 145631, 291262, 582524, 1165048, 2475727, 4951454, 9902908, 19805816]

約数ペア:

[(1, 19805816), (2, 9902908), (4, 4951454), (8, 2475727), (17, 1165048), (34, 582524), (68, 291262), (136, 145631), (137, 144568), (274, 72284), (548, 36142), (1063, 18632), (1096, 18071), (2126, 9316), (2329, 8504), (4252, 4658)]