257319972

素因数分解:

$2^2\times 3^2\times 7^4\times {\mathrm{13}}^1\times {\mathrm{229}}^1$

素因数の和:280

約数の個数: 180

約数和(自身を含む): 820749020

約数和(自身を除く): 563429048

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 49, 52, 63, 78, 84, 91, 98, 117, 126, 147, 156, 182, 196, 229, 234, 252, 273, 294, 343, 364, 441, 458, 468, 546, 588, 637, 686, 687, 819, 882, 916, 1029, 1092, 1274, 1372, 1374, 1603, 1638, 1764, 1911, 2058, 2061, 2401, 2548, 2748, 2977, 3087, 3206, 3276, 3822, 4116, 4122, 4459, 4802, 4809, 5733, 5954, 6174, 6412, 7203, 7644, 8244, 8918, 8931, 9604, 9618, 11221, 11466, 11908, 12348, 13377, 14406, 14427, 17836, 17862, 19236, 20839, 21609, 22442, 22932, 26754, 26793, 28812, 28854, 31213, 33663, 35724, 40131, 41678, 43218, 44884, 53508, 53586, 57708, 62426, 62517, 67326, 78547, 80262, 83356, 86436, 93639, 100989, 107172, 124852, 125034, 134652, 145873, 157094, 160524, 187278, 187551, 201978, 235641, 250068, 280917, 291746, 314188, 374556, 375102, 403956, 437619, 471282, 549829, 561834, 583492, 706923, 750204, 875238, 942564, 1021111, 1099658, 1123668, 1312857, 1413846, 1649487, 1750476, 2042222, 2199316, 2625714, 2827692, 3063333, 3298974, 4084444, 4948461, 5251428, 6126666, 6597948, 7147777, 9189999, 9896922, 12253332, 14295554, 18379998, 19793844, 21443331, 28591108, 36759996, 42886662, 64329993, 85773324, 128659986, 257319972]

約数ペア:

[(1, 257319972), (2, 128659986), (3, 85773324), (4, 64329993), (6, 42886662), (7, 36759996), (9, 28591108), (12, 21443331), (13, 19793844), (14, 18379998), (18, 14295554), (21, 12253332), (26, 9896922), (28, 9189999), (36, 7147777), (39, 6597948), (42, 6126666), (49, 5251428), (52, 4948461), (63, 4084444), (78, 3298974), (84, 3063333), (91, 2827692), (98, 2625714), (117, 2199316), (126, 2042222), (147, 1750476), (156, 1649487), (182, 1413846), (196, 1312857), (229, 1123668), (234, 1099658), (252, 1021111), (273, 942564), (294, 875238), (343, 750204), (364, 706923), (441, 583492), (458, 561834), (468, 549829), (546, 471282), (588, 437619), (637, 403956), (686, 375102), (687, 374556), (819, 314188), (882, 291746), (916, 280917), (1029, 250068), (1092, 235641), (1274, 201978), (1372, 187551), (1374, 187278), (1603, 160524), (1638, 157094), (1764, 145873), (1911, 134652), (2058, 125034), (2061, 124852), (2401, 107172), (2548, 100989), (2748, 93639), (2977, 86436), (3087, 83356), (3206, 80262), (3276, 78547), (3822, 67326), (4116, 62517), (4122, 62426), (4459, 57708), (4802, 53586), (4809, 53508), (5733, 44884), (5954, 43218), (6174, 41678), (6412, 40131), (7203, 35724), (7644, 33663), (8244, 31213), (8918, 28854), (8931, 28812), (9604, 26793), (9618, 26754), (11221, 22932), (11466, 22442), (11908, 21609), (12348, 20839), (13377, 19236), (14406, 17862), (14427, 17836)]