256411540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:230

約数の個数: 192

約数和(自身を含む): 715309056

約数和(自身を除く): 458897516

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 41, 44, 55, 62, 70, 77, 82, 110, 124, 131, 140, 154, 155, 164, 205, 217, 220, 262, 287, 308, 310, 341, 385, 410, 434, 451, 524, 574, 620, 655, 682, 770, 820, 868, 902, 917, 1085, 1148, 1271, 1310, 1364, 1435, 1441, 1540, 1705, 1804, 1834, 2170, 2255, 2387, 2542, 2620, 2870, 2882, 3157, 3410, 3668, 4061, 4340, 4510, 4585, 4774, 5084, 5371, 5740, 5764, 6314, 6355, 6820, 7205, 8122, 8897, 9020, 9170, 9548, 10087, 10742, 11935, 12628, 12710, 13981, 14410, 15785, 16244, 17794, 18340, 20174, 20305, 21484, 23870, 25420, 26855, 27962, 28427, 28820, 31570, 35588, 37597, 40348, 40610, 44485, 44671, 47740, 50435, 53710, 55924, 56854, 59081, 63140, 69905, 75194, 81220, 88970, 89342, 97867, 100870, 107420, 113708, 118162, 139810, 142135, 150388, 166501, 177940, 178684, 187985, 195734, 201740, 223355, 236324, 279620, 284270, 295405, 312697, 333002, 375970, 391468, 413567, 446710, 489335, 568540, 590810, 625394, 666004, 751940, 827134, 832505, 893420, 978670, 1165507, 1181620, 1250788, 1563485, 1654268, 1665010, 1831511, 1957340, 2067835, 2331014, 3126970, 3330020, 3663022, 4135670, 4662028, 5827535, 6253940, 7326044, 8271340, 9157555, 11655070, 12820577, 18315110, 23310140, 25641154, 36630220, 51282308, 64102885, 128205770, 256411540]

約数ペア:

[(1, 256411540), (2, 128205770), (4, 64102885), (5, 51282308), (7, 36630220), (10, 25641154), (11, 23310140), (14, 18315110), (20, 12820577), (22, 11655070), (28, 9157555), (31, 8271340), (35, 7326044), (41, 6253940), (44, 5827535), (55, 4662028), (62, 4135670), (70, 3663022), (77, 3330020), (82, 3126970), (110, 2331014), (124, 2067835), (131, 1957340), (140, 1831511), (154, 1665010), (155, 1654268), (164, 1563485), (205, 1250788), (217, 1181620), (220, 1165507), (262, 978670), (287, 893420), (308, 832505), (310, 827134), (341, 751940), (385, 666004), (410, 625394), (434, 590810), (451, 568540), (524, 489335), (574, 446710), (620, 413567), (655, 391468), (682, 375970), (770, 333002), (820, 312697), (868, 295405), (902, 284270), (917, 279620), (1085, 236324), (1148, 223355), (1271, 201740), (1310, 195734), (1364, 187985), (1435, 178684), (1441, 177940), (1540, 166501), (1705, 150388), (1804, 142135), (1834, 139810), (2170, 118162), (2255, 113708), (2387, 107420), (2542, 100870), (2620, 97867), (2870, 89342), (2882, 88970), (3157, 81220), (3410, 75194), (3668, 69905), (4061, 63140), (4340, 59081), (4510, 56854), (4585, 55924), (4774, 53710), (5084, 50435), (5371, 47740), (5740, 44671), (5764, 44485), (6314, 40610), (6355, 40348), (6820, 37597), (7205, 35588), (8122, 31570), (8897, 28820), (9020, 28427), (9170, 27962), (9548, 26855), (10087, 25420), (10742, 23870), (11935, 21484), (12628, 20305), (12710, 20174), (13981, 18340), (14410, 17794), (15785, 16244)]