261729280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:170

約数の個数: 176

約数和(自身を含む): 693294336

約数和(自身を除く): 431565056

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 64, 68, 80, 85, 97, 124, 128, 136, 155, 160, 170, 194, 248, 256, 272, 310, 320, 340, 388, 485, 496, 512, 527, 544, 620, 640, 680, 776, 970, 992, 1024, 1054, 1088, 1240, 1280, 1360, 1552, 1649, 1940, 1984, 2108, 2176, 2480, 2560, 2635, 2720, 3007, 3104, 3298, 3880, 3968, 4216, 4352, 4960, 5120, 5270, 5440, 6014, 6208, 6596, 7760, 7936, 8245, 8432, 8704, 9920, 10540, 10880, 12028, 12416, 13192, 15035, 15520, 15872, 16490, 16864, 17408, 19840, 21080, 21760, 24056, 24832, 26384, 30070, 31040, 31744, 32980, 33728, 39680, 42160, 43520, 48112, 49664, 51119, 52768, 60140, 62080, 65960, 67456, 79360, 84320, 87040, 96224, 99328, 102238, 105536, 120280, 124160, 131920, 134912, 158720, 168640, 192448, 204476, 211072, 240560, 248320, 255595, 263840, 269824, 337280, 384896, 408952, 422144, 481120, 496640, 511190, 527680, 539648, 674560, 769792, 817904, 844288, 962240, 1022380, 1055360, 1349120, 1539584, 1635808, 1688576, 1924480, 2044760, 2110720, 2698240, 3079168, 3271616, 3848960, 4089520, 4221440, 6543232, 7697920, 8179040, 8442880, 13086464, 15395840, 16358080, 26172928, 32716160, 52345856, 65432320, 130864640, 261729280]

約数ペア:

[(1, 261729280), (2, 130864640), (4, 65432320), (5, 52345856), (8, 32716160), (10, 26172928), (16, 16358080), (17, 15395840), (20, 13086464), (31, 8442880), (32, 8179040), (34, 7697920), (40, 6543232), (62, 4221440), (64, 4089520), (68, 3848960), (80, 3271616), (85, 3079168), (97, 2698240), (124, 2110720), (128, 2044760), (136, 1924480), (155, 1688576), (160, 1635808), (170, 1539584), (194, 1349120), (248, 1055360), (256, 1022380), (272, 962240), (310, 844288), (320, 817904), (340, 769792), (388, 674560), (485, 539648), (496, 527680), (512, 511190), (527, 496640), (544, 481120), (620, 422144), (640, 408952), (680, 384896), (776, 337280), (970, 269824), (992, 263840), (1024, 255595), (1054, 248320), (1088, 240560), (1240, 211072), (1280, 204476), (1360, 192448), (1552, 168640), (1649, 158720), (1940, 134912), (1984, 131920), (2108, 124160), (2176, 120280), (2480, 105536), (2560, 102238), (2635, 99328), (2720, 96224), (3007, 87040), (3104, 84320), (3298, 79360), (3880, 67456), (3968, 65960), (4216, 62080), (4352, 60140), (4960, 52768), (5120, 51119), (5270, 49664), (5440, 48112), (6014, 43520), (6208, 42160), (6596, 39680), (7760, 33728), (7936, 32980), (8245, 31744), (8432, 31040), (8704, 30070), (9920, 26384), (10540, 24832), (10880, 24056), (12028, 21760), (12416, 21080), (13192, 19840), (15035, 17408), (15520, 16864), (15872, 16490)]