19885756

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 39997440

約数和(自身を除く): 20111684

約数列:

[1, 2, 4, 11, 22, 31, 44, 61, 62, 122, 124, 239, 244, 341, 478, 671, 682, 956, 1342, 1364, 1891, 2629, 2684, 3782, 5258, 7409, 7564, 10516, 14579, 14818, 20801, 29158, 29636, 41602, 58316, 81499, 83204, 160369, 162998, 320738, 325996, 451949, 641476, 903898, 1807796, 4971439, 9942878, 19885756]

約数ペア:

[(1, 19885756), (2, 9942878), (4, 4971439), (11, 1807796), (22, 903898), (31, 641476), (44, 451949), (61, 325996), (62, 320738), (122, 162998), (124, 160369), (239, 83204), (244, 81499), (341, 58316), (478, 41602), (671, 29636), (682, 29158), (956, 20801), (1342, 14818), (1364, 14579), (1891, 10516), (2629, 7564), (2684, 7409), (3782, 5258)]