18914120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{607}}^1$

素因数の和:678

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 27050680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 607, 760, 779, 820, 1214, 1558, 1640, 2428, 3035, 3116, 3895, 4856, 6070, 6232, 7790, 11533, 12140, 15580, 23066, 24280, 24887, 31160, 46132, 49774, 57665, 92264, 99548, 115330, 124435, 199096, 230660, 248870, 461320, 472853, 497740, 945706, 995480, 1891412, 2364265, 3782824, 4728530, 9457060, 18914120]

約数ペア:

[(1, 18914120), (2, 9457060), (4, 4728530), (5, 3782824), (8, 2364265), (10, 1891412), (19, 995480), (20, 945706), (38, 497740), (40, 472853), (41, 461320), (76, 248870), (82, 230660), (95, 199096), (152, 124435), (164, 115330), (190, 99548), (205, 92264), (328, 57665), (380, 49774), (410, 46132), (607, 31160), (760, 24887), (779, 24280), (820, 23066), (1214, 15580), (1558, 12140), (1640, 11533), (2428, 7790), (3035, 6232), (3116, 6070), (3895, 4856)]