256811940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2647}}^1$

素因数の和:2687

約数の個数: 216

約数和(自身を含む): 988932672

約数和(自身を除く): 732120732

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 49, 55, 60, 63, 66, 70, 77, 84, 90, 98, 99, 105, 110, 126, 132, 140, 147, 154, 165, 180, 196, 198, 210, 220, 231, 245, 252, 294, 308, 315, 330, 385, 396, 420, 441, 462, 490, 495, 539, 588, 630, 660, 693, 735, 770, 882, 924, 980, 990, 1078, 1155, 1260, 1386, 1470, 1540, 1617, 1764, 1980, 2156, 2205, 2310, 2647, 2695, 2772, 2940, 3234, 3465, 4410, 4620, 4851, 5294, 5390, 6468, 6930, 7941, 8085, 8820, 9702, 10588, 10780, 13235, 13860, 15882, 16170, 18529, 19404, 23823, 24255, 26470, 29117, 31764, 32340, 37058, 39705, 47646, 48510, 52940, 55587, 58234, 74116, 79410, 87351, 92645, 95292, 97020, 111174, 116468, 119115, 129703, 145585, 158820, 166761, 174702, 185290, 203819, 222348, 238230, 259406, 262053, 277935, 291170, 333522, 349404, 370580, 389109, 407638, 436755, 476460, 518812, 524106, 555870, 582340, 611457, 648515, 667044, 778218, 815276, 833805, 873510, 1019095, 1048212, 1111740, 1167327, 1222914, 1297030, 1310265, 1426733, 1556436, 1667610, 1747020, 1834371, 1945545, 2038190, 2334654, 2445828, 2594060, 2620530, 2853466, 3057285, 3335220, 3668742, 3891090, 4076380, 4280199, 4669308, 5241060, 5706932, 5836635, 6114570, 7133665, 7337484, 7782180, 8560398, 9171855, 11673270, 12229140, 12840597, 14267330, 17120796, 18343710, 21400995, 23346540, 25681194, 28534660, 36687420, 42801990, 51362388, 64202985, 85603980, 128405970, 256811940]

約数ペア:

[(1, 256811940), (2, 128405970), (3, 85603980), (4, 64202985), (5, 51362388), (6, 42801990), (7, 36687420), (9, 28534660), (10, 25681194), (11, 23346540), (12, 21400995), (14, 18343710), (15, 17120796), (18, 14267330), (20, 12840597), (21, 12229140), (22, 11673270), (28, 9171855), (30, 8560398), (33, 7782180), (35, 7337484), (36, 7133665), (42, 6114570), (44, 5836635), (45, 5706932), (49, 5241060), (55, 4669308), (60, 4280199), (63, 4076380), (66, 3891090), (70, 3668742), (77, 3335220), (84, 3057285), (90, 2853466), (98, 2620530), (99, 2594060), (105, 2445828), (110, 2334654), (126, 2038190), (132, 1945545), (140, 1834371), (147, 1747020), (154, 1667610), (165, 1556436), (180, 1426733), (196, 1310265), (198, 1297030), (210, 1222914), (220, 1167327), (231, 1111740), (245, 1048212), (252, 1019095), (294, 873510), (308, 833805), (315, 815276), (330, 778218), (385, 667044), (396, 648515), (420, 611457), (441, 582340), (462, 555870), (490, 524106), (495, 518812), (539, 476460), (588, 436755), (630, 407638), (660, 389109), (693, 370580), (735, 349404), (770, 333522), (882, 291170), (924, 277935), (980, 262053), (990, 259406), (1078, 238230), (1155, 222348), (1260, 203819), (1386, 185290), (1470, 174702), (1540, 166761), (1617, 158820), (1764, 145585), (1980, 129703), (2156, 119115), (2205, 116468), (2310, 111174), (2647, 97020), (2695, 95292), (2772, 92645), (2940, 87351), (3234, 79410), (3465, 74116), (4410, 58234), (4620, 55587), (4851, 52940), (5294, 48510), (5390, 47646), (6468, 39705), (6930, 37058), (7941, 32340), (8085, 31764), (8820, 29117), (9702, 26470), (10588, 24255), (10780, 23823), (13235, 19404), (13860, 18529), (15882, 16170)]