261984240

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{17327}}^1$

素因数の和:17356

約数の個数: 160

約数和(自身を含む): 1031362560

約数和(自身を除く): 769378320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 17327, 34654, 51981, 69308, 86635, 103962, 121289, 138616, 155943, 173270, 207924, 242578, 259905, 277232, 311886, 346540, 363867, 415848, 467829, 485156, 519810, 606445, 623772, 693080, 727734, 779715, 831696, 935658, 970312, 1039620, 1091601, 1212890, 1247544, 1386160, 1455468, 1559430, 1819335, 1871316, 1940624, 2079240, 2183202, 2339145, 2425780, 2495088, 2910936, 3118860, 3274803, 3638670, 3742632, 4158480, 4366404, 4678290, 4851560, 5458005, 5821872, 6237720, 6549606, 7277340, 7485264, 8732808, 9356580, 9703120, 10916010, 12475440, 13099212, 14554680, 16374015, 17465616, 18713160, 21832020, 26198424, 29109360, 32748030, 37426320, 43664040, 52396848, 65496060, 87328080, 130992120, 261984240]

約数ペア:

[(1, 261984240), (2, 130992120), (3, 87328080), (4, 65496060), (5, 52396848), (6, 43664040), (7, 37426320), (8, 32748030), (9, 29109360), (10, 26198424), (12, 21832020), (14, 18713160), (15, 17465616), (16, 16374015), (18, 14554680), (20, 13099212), (21, 12475440), (24, 10916010), (27, 9703120), (28, 9356580), (30, 8732808), (35, 7485264), (36, 7277340), (40, 6549606), (42, 6237720), (45, 5821872), (48, 5458005), (54, 4851560), (56, 4678290), (60, 4366404), (63, 4158480), (70, 3742632), (72, 3638670), (80, 3274803), (84, 3118860), (90, 2910936), (105, 2495088), (108, 2425780), (112, 2339145), (120, 2183202), (126, 2079240), (135, 1940624), (140, 1871316), (144, 1819335), (168, 1559430), (180, 1455468), (189, 1386160), (210, 1247544), (216, 1212890), (240, 1091601), (252, 1039620), (270, 970312), (280, 935658), (315, 831696), (336, 779715), (360, 727734), (378, 693080), (420, 623772), (432, 606445), (504, 519810), (540, 485156), (560, 467829), (630, 415848), (720, 363867), (756, 346540), (840, 311886), (945, 277232), (1008, 259905), (1080, 242578), (1260, 207924), (1512, 173270), (1680, 155943), (1890, 138616), (2160, 121289), (2520, 103962), (3024, 86635), (3780, 69308), (5040, 51981), (7560, 34654), (15120, 17327)]