131719840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{317}}^1$

素因数の和:399

約数の個数: 144

約数和(自身を含む): 369987912

約数和(自身を除く): 238268072

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 53, 56, 70, 80, 98, 106, 112, 140, 160, 196, 212, 224, 245, 265, 280, 317, 371, 392, 424, 490, 530, 560, 634, 742, 784, 848, 980, 1060, 1120, 1268, 1484, 1568, 1585, 1696, 1855, 1960, 2120, 2219, 2536, 2597, 2968, 3170, 3710, 3920, 4240, 4438, 5072, 5194, 5936, 6340, 7420, 7840, 8480, 8876, 10144, 10388, 11095, 11872, 12680, 12985, 14840, 15533, 16801, 17752, 20776, 22190, 25360, 25970, 29680, 31066, 33602, 35504, 41552, 44380, 50720, 51940, 59360, 62132, 67204, 71008, 77665, 83104, 84005, 88760, 103880, 117607, 124264, 134408, 155330, 168010, 177520, 207760, 235214, 248528, 268816, 310660, 336020, 355040, 415520, 470428, 497056, 537632, 588035, 621320, 672040, 823249, 940856, 1176070, 1242640, 1344080, 1646498, 1881712, 2352140, 2485280, 2688160, 3292996, 3763424, 4116245, 4704280, 6585992, 8232490, 9408560, 13171984, 16464980, 18817120, 26343968, 32929960, 65859920, 131719840]

約数ペア:

[(1, 131719840), (2, 65859920), (4, 32929960), (5, 26343968), (7, 18817120), (8, 16464980), (10, 13171984), (14, 9408560), (16, 8232490), (20, 6585992), (28, 4704280), (32, 4116245), (35, 3763424), (40, 3292996), (49, 2688160), (53, 2485280), (56, 2352140), (70, 1881712), (80, 1646498), (98, 1344080), (106, 1242640), (112, 1176070), (140, 940856), (160, 823249), (196, 672040), (212, 621320), (224, 588035), (245, 537632), (265, 497056), (280, 470428), (317, 415520), (371, 355040), (392, 336020), (424, 310660), (490, 268816), (530, 248528), (560, 235214), (634, 207760), (742, 177520), (784, 168010), (848, 155330), (980, 134408), (1060, 124264), (1120, 117607), (1268, 103880), (1484, 88760), (1568, 84005), (1585, 83104), (1696, 77665), (1855, 71008), (1960, 67204), (2120, 62132), (2219, 59360), (2536, 51940), (2597, 50720), (2968, 44380), (3170, 41552), (3710, 35504), (3920, 33602), (4240, 31066), (4438, 29680), (5072, 25970), (5194, 25360), (5936, 22190), (6340, 20776), (7420, 17752), (7840, 16801), (8480, 15533), (8876, 14840), (10144, 12985), (10388, 12680), (11095, 11872)]