257496470

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:187

約数の個数: 144

約数和(自身を含む): 612423504

約数和(自身を除く): 354927034

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 43, 49, 55, 70, 77, 86, 98, 101, 110, 121, 154, 202, 215, 242, 245, 301, 385, 430, 473, 490, 505, 539, 602, 605, 707, 770, 847, 946, 1010, 1078, 1111, 1210, 1414, 1505, 1694, 2107, 2222, 2365, 2695, 3010, 3311, 3535, 4214, 4235, 4343, 4730, 4949, 5203, 5390, 5555, 5929, 6622, 7070, 7777, 8470, 8686, 9898, 10406, 10535, 11110, 11858, 12221, 15554, 16555, 21070, 21715, 23177, 24442, 24745, 26015, 29645, 30401, 33110, 36421, 38885, 43430, 46354, 47773, 49490, 52030, 54439, 59290, 60802, 61105, 72842, 77770, 85547, 95546, 108878, 115885, 122210, 152005, 171094, 182105, 212807, 231770, 238865, 254947, 272195, 304010, 334411, 364210, 425614, 427735, 477730, 509894, 525503, 544390, 598829, 668822, 855470, 1051006, 1064035, 1197658, 1274735, 1672055, 2128070, 2340877, 2549470, 2627515, 2994145, 3344110, 3678521, 4681754, 5255030, 5988290, 7357042, 11704385, 18392605, 23408770, 25749647, 36785210, 51499294, 128748235, 257496470]

約数ペア:

[(1, 257496470), (2, 128748235), (5, 51499294), (7, 36785210), (10, 25749647), (11, 23408770), (14, 18392605), (22, 11704385), (35, 7357042), (43, 5988290), (49, 5255030), (55, 4681754), (70, 3678521), (77, 3344110), (86, 2994145), (98, 2627515), (101, 2549470), (110, 2340877), (121, 2128070), (154, 1672055), (202, 1274735), (215, 1197658), (242, 1064035), (245, 1051006), (301, 855470), (385, 668822), (430, 598829), (473, 544390), (490, 525503), (505, 509894), (539, 477730), (602, 427735), (605, 425614), (707, 364210), (770, 334411), (847, 304010), (946, 272195), (1010, 254947), (1078, 238865), (1111, 231770), (1210, 212807), (1414, 182105), (1505, 171094), (1694, 152005), (2107, 122210), (2222, 115885), (2365, 108878), (2695, 95546), (3010, 85547), (3311, 77770), (3535, 72842), (4214, 61105), (4235, 60802), (4343, 59290), (4730, 54439), (4949, 52030), (5203, 49490), (5390, 47773), (5555, 46354), (5929, 43430), (6622, 38885), (7070, 36421), (7777, 33110), (8470, 30401), (8686, 29645), (9898, 26015), (10406, 24745), (10535, 24442), (11110, 23177), (11858, 21715), (12221, 21070), (15554, 16555)]