721808172

素因数分解:

$2^2\times 3^5\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{389}}^1$

素因数の和:514

約数の個数: 144

約数和(自身を含む): 2003339520

約数和(自身を除く): 1281531348

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 27, 36, 46, 54, 69, 81, 83, 92, 108, 138, 162, 166, 207, 243, 249, 276, 324, 332, 389, 414, 486, 498, 621, 747, 778, 828, 972, 996, 1167, 1242, 1494, 1556, 1863, 1909, 2241, 2334, 2484, 2988, 3501, 3726, 3818, 4482, 4668, 5589, 5727, 6723, 7002, 7452, 7636, 8947, 8964, 10503, 11178, 11454, 13446, 14004, 17181, 17894, 20169, 21006, 22356, 22908, 26841, 26892, 31509, 32287, 34362, 35788, 40338, 42012, 51543, 53682, 63018, 64574, 68724, 80523, 80676, 94527, 96861, 103086, 107364, 126036, 129148, 154629, 161046, 189054, 193722, 206172, 241569, 290583, 309258, 322092, 378108, 387444, 463887, 483138, 581166, 618516, 724707, 742601, 871749, 927774, 966276, 1162332, 1449414, 1485202, 1743498, 1855548, 2174121, 2227803, 2615247, 2898828, 2970404, 3486996, 4348242, 4455606, 5230494, 6683409, 7845741, 8696484, 8911212, 10460988, 13366818, 15691482, 20050227, 26733636, 31382964, 40100454, 60150681, 80200908, 120301362, 180452043, 240602724, 360904086, 721808172]

約数ペア:

[(1, 721808172), (2, 360904086), (3, 240602724), (4, 180452043), (6, 120301362), (9, 80200908), (12, 60150681), (18, 40100454), (23, 31382964), (27, 26733636), (36, 20050227), (46, 15691482), (54, 13366818), (69, 10460988), (81, 8911212), (83, 8696484), (92, 7845741), (108, 6683409), (138, 5230494), (162, 4455606), (166, 4348242), (207, 3486996), (243, 2970404), (249, 2898828), (276, 2615247), (324, 2227803), (332, 2174121), (389, 1855548), (414, 1743498), (486, 1485202), (498, 1449414), (621, 1162332), (747, 966276), (778, 927774), (828, 871749), (972, 742601), (996, 724707), (1167, 618516), (1242, 581166), (1494, 483138), (1556, 463887), (1863, 387444), (1909, 378108), (2241, 322092), (2334, 309258), (2484, 290583), (2988, 241569), (3501, 206172), (3726, 193722), (3818, 189054), (4482, 161046), (4668, 154629), (5589, 129148), (5727, 126036), (6723, 107364), (7002, 103086), (7452, 96861), (7636, 94527), (8947, 80676), (8964, 80523), (10503, 68724), (11178, 64574), (11454, 63018), (13446, 53682), (14004, 51543), (17181, 42012), (17894, 40338), (20169, 35788), (21006, 34362), (22356, 32287), (22908, 31509), (26841, 26892)]