1258880000

素因数分解:

$2^{10}\times 5^4\times 7^1\times {\mathrm{281}}^1$

素因数の和:328

約数の個数: 220

約数和(自身を含む): 3606682992

約数和(自身を除く): 2347802992

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 125, 128, 140, 160, 175, 200, 224, 250, 256, 280, 281, 320, 350, 400, 448, 500, 512, 560, 562, 625, 640, 700, 800, 875, 896, 1000, 1024, 1120, 1124, 1250, 1280, 1400, 1405, 1600, 1750, 1792, 1967, 2000, 2240, 2248, 2500, 2560, 2800, 2810, 3200, 3500, 3584, 3934, 4000, 4375, 4480, 4496, 5000, 5120, 5600, 5620, 6400, 7000, 7025, 7168, 7868, 8000, 8750, 8960, 8992, 9835, 10000, 11200, 11240, 12800, 14000, 14050, 15736, 16000, 17500, 17920, 17984, 19670, 20000, 22400, 22480, 25600, 28000, 28100, 31472, 32000, 35000, 35125, 35840, 35968, 39340, 40000, 44800, 44960, 49175, 56000, 56200, 62944, 64000, 70000, 70250, 71936, 78680, 80000, 89600, 89920, 98350, 112000, 112400, 125888, 128000, 140000, 140500, 143872, 157360, 160000, 175625, 179200, 179840, 196700, 224000, 224800, 245875, 251776, 280000, 281000, 287744, 314720, 320000, 351250, 359680, 393400, 448000, 449600, 491750, 503552, 560000, 562000, 629440, 640000, 702500, 719360, 786800, 896000, 899200, 983500, 1007104, 1120000, 1124000, 1229375, 1258880, 1405000, 1438720, 1573600, 1798400, 1967000, 2014208, 2240000, 2248000, 2458750, 2517760, 2810000, 3147200, 3596800, 3934000, 4480000, 4496000, 4917500, 5035520, 5620000, 6294400, 7193600, 7868000, 8992000, 9835000, 10071040, 11240000, 12588800, 15736000, 17984000, 19670000, 22480000, 25177600, 31472000, 35968000, 39340000, 44960000, 50355200, 62944000, 78680000, 89920000, 125888000, 157360000, 179840000, 251776000, 314720000, 629440000, 1258880000]

約数ペア:

[(1, 1258880000), (2, 629440000), (4, 314720000), (5, 251776000), (7, 179840000), (8, 157360000), (10, 125888000), (14, 89920000), (16, 78680000), (20, 62944000), (25, 50355200), (28, 44960000), (32, 39340000), (35, 35968000), (40, 31472000), (50, 25177600), (56, 22480000), (64, 19670000), (70, 17984000), (80, 15736000), (100, 12588800), (112, 11240000), (125, 10071040), (128, 9835000), (140, 8992000), (160, 7868000), (175, 7193600), (200, 6294400), (224, 5620000), (250, 5035520), (256, 4917500), (280, 4496000), (281, 4480000), (320, 3934000), (350, 3596800), (400, 3147200), (448, 2810000), (500, 2517760), (512, 2458750), (560, 2248000), (562, 2240000), (625, 2014208), (640, 1967000), (700, 1798400), (800, 1573600), (875, 1438720), (896, 1405000), (1000, 1258880), (1024, 1229375), (1120, 1124000), (1124, 1120000), (1250, 1007104), (1280, 983500), (1400, 899200), (1405, 896000), (1600, 786800), (1750, 719360), (1792, 702500), (1967, 640000), (2000, 629440), (2240, 562000), (2248, 560000), (2500, 503552), (2560, 491750), (2800, 449600), (2810, 448000), (3200, 393400), (3500, 359680), (3584, 351250), (3934, 320000), (4000, 314720), (4375, 287744), (4480, 281000), (4496, 280000), (5000, 251776), (5120, 245875), (5600, 224800), (5620, 224000), (6400, 196700), (7000, 179840), (7025, 179200), (7168, 175625), (7868, 160000), (8000, 157360), (8750, 143872), (8960, 140500), (8992, 140000), (9835, 128000), (10000, 125888), (11200, 112400), (11240, 112000), (12800, 98350), (14000, 89920), (14050, 89600), (15736, 80000), (16000, 78680), (17500, 71936), (17920, 70250), (17984, 70000), (19670, 64000), (20000, 62944), (22400, 56200), (22480, 56000), (25600, 49175), (28000, 44960), (28100, 44800), (31472, 40000), (32000, 39340), (35000, 35968), (35125, 35840)]