257551140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{521}}^1$

素因数の和:658

約数の個数: 192

約数和(自身を含む): 909232128

約数和(自身を除く): 651680988

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 107, 110, 132, 140, 154, 165, 210, 214, 220, 231, 308, 321, 330, 385, 420, 428, 462, 521, 535, 642, 660, 749, 770, 924, 1042, 1070, 1155, 1177, 1284, 1498, 1540, 1563, 1605, 2084, 2140, 2247, 2310, 2354, 2605, 2996, 3126, 3210, 3531, 3647, 3745, 4494, 4620, 4708, 5210, 5731, 5885, 6252, 6420, 7062, 7294, 7490, 7815, 8239, 8988, 10420, 10941, 11235, 11462, 11770, 14124, 14588, 14980, 15630, 16478, 17193, 17655, 18235, 21882, 22470, 22924, 23540, 24717, 28655, 31260, 32956, 34386, 35310, 36470, 40117, 41195, 43764, 44940, 49434, 54705, 55747, 57310, 68772, 70620, 72940, 80234, 82390, 85965, 98868, 109410, 111494, 114620, 120351, 123585, 160468, 164780, 167241, 171930, 200585, 218820, 222988, 240702, 247170, 278735, 334482, 343860, 390229, 401170, 481404, 494340, 557470, 601755, 613217, 668964, 780458, 802340, 836205, 1114940, 1170687, 1203510, 1226434, 1560916, 1672410, 1839651, 1951145, 2341374, 2407020, 2452868, 3066085, 3344820, 3679302, 3902290, 4292519, 4682748, 5853435, 6132170, 7358604, 7804580, 8585038, 9198255, 11706870, 12264340, 12877557, 17170076, 18396510, 21462595, 23413740, 25755114, 36793020, 42925190, 51510228, 64387785, 85850380, 128775570, 257551140]

約数ペア:

[(1, 257551140), (2, 128775570), (3, 85850380), (4, 64387785), (5, 51510228), (6, 42925190), (7, 36793020), (10, 25755114), (11, 23413740), (12, 21462595), (14, 18396510), (15, 17170076), (20, 12877557), (21, 12264340), (22, 11706870), (28, 9198255), (30, 8585038), (33, 7804580), (35, 7358604), (42, 6132170), (44, 5853435), (55, 4682748), (60, 4292519), (66, 3902290), (70, 3679302), (77, 3344820), (84, 3066085), (105, 2452868), (107, 2407020), (110, 2341374), (132, 1951145), (140, 1839651), (154, 1672410), (165, 1560916), (210, 1226434), (214, 1203510), (220, 1170687), (231, 1114940), (308, 836205), (321, 802340), (330, 780458), (385, 668964), (420, 613217), (428, 601755), (462, 557470), (521, 494340), (535, 481404), (642, 401170), (660, 390229), (749, 343860), (770, 334482), (924, 278735), (1042, 247170), (1070, 240702), (1155, 222988), (1177, 218820), (1284, 200585), (1498, 171930), (1540, 167241), (1563, 164780), (1605, 160468), (2084, 123585), (2140, 120351), (2247, 114620), (2310, 111494), (2354, 109410), (2605, 98868), (2996, 85965), (3126, 82390), (3210, 80234), (3531, 72940), (3647, 70620), (3745, 68772), (4494, 57310), (4620, 55747), (4708, 54705), (5210, 49434), (5731, 44940), (5885, 43764), (6252, 41195), (6420, 40117), (7062, 36470), (7294, 35310), (7490, 34386), (7815, 32956), (8239, 31260), (8988, 28655), (10420, 24717), (10941, 23540), (11235, 22924), (11462, 22470), (11770, 21882), (14124, 18235), (14588, 17655), (14980, 17193), (15630, 16478)]