128397200

素因数分解:

$2^4\times 5^2\times {\mathrm{257}}^1\times {\mathrm{1249}}^1$

素因数の和:1524

約数の個数: 60

約数和(自身を含む): 309922500

約数和(自身を除く): 181525300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 257, 400, 514, 1028, 1249, 1285, 2056, 2498, 2570, 4112, 4996, 5140, 6245, 6425, 9992, 10280, 12490, 12850, 19984, 20560, 24980, 25700, 31225, 49960, 51400, 62450, 99920, 102800, 124900, 249800, 320993, 499600, 641986, 1283972, 1604965, 2567944, 3209930, 5135888, 6419860, 8024825, 12839720, 16049650, 25679440, 32099300, 64198600, 128397200]

約数ペア:

[(1, 128397200), (2, 64198600), (4, 32099300), (5, 25679440), (8, 16049650), (10, 12839720), (16, 8024825), (20, 6419860), (25, 5135888), (40, 3209930), (50, 2567944), (80, 1604965), (100, 1283972), (200, 641986), (257, 499600), (400, 320993), (514, 249800), (1028, 124900), (1249, 102800), (1285, 99920), (2056, 62450), (2498, 51400), (2570, 49960), (4112, 31225), (4996, 25700), (5140, 24980), (6245, 20560), (6425, 19984), (9992, 12850), (10280, 12490)]