278743010

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:340

約数の個数: 128

約数和(自身を含む): 655699968

約数和(自身を除く): 376956958

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 41, 62, 65, 70, 82, 91, 130, 155, 182, 205, 217, 241, 287, 310, 403, 410, 434, 455, 482, 533, 574, 806, 910, 1066, 1085, 1205, 1271, 1435, 1687, 2015, 2170, 2410, 2542, 2665, 2821, 2870, 3133, 3374, 3731, 4030, 5330, 5642, 6266, 6355, 7462, 7471, 8435, 8897, 9881, 12710, 14105, 14942, 15665, 16523, 16870, 17794, 18655, 19762, 21931, 28210, 31330, 33046, 37310, 37355, 43862, 44485, 49405, 52297, 69167, 74710, 82615, 88970, 97123, 98810, 104594, 109655, 115661, 128453, 138334, 165230, 194246, 219310, 231322, 256906, 261485, 306311, 345835, 485615, 522970, 578305, 612622, 642265, 679861, 691670, 899171, 971230, 1156610, 1284530, 1359722, 1531555, 1798342, 2144177, 3063110, 3399305, 3982043, 4288354, 4495855, 6798610, 7964086, 8991710, 10720885, 19910215, 21441770, 27874301, 39820430, 55748602, 139371505, 278743010]

約数ペア:

[(1, 278743010), (2, 139371505), (5, 55748602), (7, 39820430), (10, 27874301), (13, 21441770), (14, 19910215), (26, 10720885), (31, 8991710), (35, 7964086), (41, 6798610), (62, 4495855), (65, 4288354), (70, 3982043), (82, 3399305), (91, 3063110), (130, 2144177), (155, 1798342), (182, 1531555), (205, 1359722), (217, 1284530), (241, 1156610), (287, 971230), (310, 899171), (403, 691670), (410, 679861), (434, 642265), (455, 612622), (482, 578305), (533, 522970), (574, 485615), (806, 345835), (910, 306311), (1066, 261485), (1085, 256906), (1205, 231322), (1271, 219310), (1435, 194246), (1687, 165230), (2015, 138334), (2170, 128453), (2410, 115661), (2542, 109655), (2665, 104594), (2821, 98810), (2870, 97123), (3133, 88970), (3374, 82615), (3731, 74710), (4030, 69167), (5330, 52297), (5642, 49405), (6266, 44485), (6355, 43862), (7462, 37355), (7471, 37310), (8435, 33046), (8897, 31330), (9881, 28210), (12710, 21931), (14105, 19762), (14942, 18655), (15665, 17794), (16523, 16870)]