261356472

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{457}}^1$

素因数の和:542

約数の個数: 144

約数和(自身を含む): 784499040

約数和(自身を除く): 523142568

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 47, 52, 72, 78, 94, 104, 117, 141, 156, 169, 188, 234, 282, 312, 338, 376, 423, 457, 468, 507, 564, 611, 676, 846, 914, 936, 1014, 1128, 1222, 1352, 1371, 1521, 1692, 1828, 1833, 2028, 2444, 2742, 3042, 3384, 3656, 3666, 4056, 4113, 4888, 5484, 5499, 5941, 6084, 7332, 7943, 8226, 10968, 10998, 11882, 12168, 14664, 15886, 16452, 17823, 21479, 21996, 23764, 23829, 31772, 32904, 35646, 42958, 43992, 47528, 47658, 53469, 63544, 64437, 71292, 71487, 77233, 85916, 95316, 106938, 128874, 142584, 142974, 154466, 171832, 190632, 193311, 213876, 231699, 257748, 279227, 285948, 308932, 386622, 427752, 463398, 515496, 558454, 571896, 617864, 695097, 773244, 837681, 926796, 1116908, 1390194, 1546488, 1675362, 1853592, 2233816, 2513043, 2780388, 3350724, 3629951, 5026086, 5560776, 6701448, 7259902, 10052172, 10889853, 14519804, 20104344, 21779706, 29039608, 32669559, 43559412, 65339118, 87118824, 130678236, 261356472]

約数ペア:

[(1, 261356472), (2, 130678236), (3, 87118824), (4, 65339118), (6, 43559412), (8, 32669559), (9, 29039608), (12, 21779706), (13, 20104344), (18, 14519804), (24, 10889853), (26, 10052172), (36, 7259902), (39, 6701448), (47, 5560776), (52, 5026086), (72, 3629951), (78, 3350724), (94, 2780388), (104, 2513043), (117, 2233816), (141, 1853592), (156, 1675362), (169, 1546488), (188, 1390194), (234, 1116908), (282, 926796), (312, 837681), (338, 773244), (376, 695097), (423, 617864), (457, 571896), (468, 558454), (507, 515496), (564, 463398), (611, 427752), (676, 386622), (846, 308932), (914, 285948), (936, 279227), (1014, 257748), (1128, 231699), (1222, 213876), (1352, 193311), (1371, 190632), (1521, 171832), (1692, 154466), (1828, 142974), (1833, 142584), (2028, 128874), (2444, 106938), (2742, 95316), (3042, 85916), (3384, 77233), (3656, 71487), (3666, 71292), (4056, 64437), (4113, 63544), (4888, 53469), (5484, 47658), (5499, 47528), (5941, 43992), (6084, 42958), (7332, 35646), (7943, 32904), (8226, 31772), (10968, 23829), (10998, 23764), (11882, 21996), (12168, 21479), (14664, 17823), (15886, 16452)]