256637654

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{3499}}^1$

素因数の和:3565

約数の個数: 48

約数和(自身を含む): 491904000

約数和(自身を除く): 235266346

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 91, 169, 182, 217, 338, 403, 434, 806, 1183, 2366, 2821, 3499, 5239, 5642, 6998, 10478, 24493, 36673, 45487, 48986, 73346, 90974, 108469, 216938, 318409, 591331, 636818, 759283, 1182662, 1410097, 1518566, 2820194, 4139317, 8278634, 9870679, 18331261, 19741358, 36662522, 128318827, 256637654]

約数ペア:

[(1, 256637654), (2, 128318827), (7, 36662522), (13, 19741358), (14, 18331261), (26, 9870679), (31, 8278634), (62, 4139317), (91, 2820194), (169, 1518566), (182, 1410097), (217, 1182662), (338, 759283), (403, 636818), (434, 591331), (806, 318409), (1183, 216938), (2366, 108469), (2821, 90974), (3499, 73346), (5239, 48986), (5642, 45487), (6998, 36673), (10478, 24493)]