128020000

素因数分解:

$2^5\times 5^4\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:240

約数の個数: 120

約数和(自身を含む): 325330236

約数和(自身を除く): 197310236

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 50, 74, 80, 100, 125, 148, 160, 173, 185, 200, 250, 296, 346, 370, 400, 500, 592, 625, 692, 740, 800, 865, 925, 1000, 1184, 1250, 1384, 1480, 1730, 1850, 2000, 2500, 2768, 2960, 3460, 3700, 4000, 4325, 4625, 5000, 5536, 5920, 6401, 6920, 7400, 8650, 9250, 10000, 12802, 13840, 14800, 17300, 18500, 20000, 21625, 23125, 25604, 27680, 29600, 32005, 34600, 37000, 43250, 46250, 51208, 64010, 69200, 74000, 86500, 92500, 102416, 108125, 128020, 138400, 148000, 160025, 173000, 185000, 204832, 216250, 256040, 320050, 346000, 370000, 432500, 512080, 640100, 692000, 740000, 800125, 865000, 1024160, 1280200, 1600250, 1730000, 2560400, 3200500, 3460000, 4000625, 5120800, 6401000, 8001250, 12802000, 16002500, 25604000, 32005000, 64010000, 128020000]

約数ペア:

[(1, 128020000), (2, 64010000), (4, 32005000), (5, 25604000), (8, 16002500), (10, 12802000), (16, 8001250), (20, 6401000), (25, 5120800), (32, 4000625), (37, 3460000), (40, 3200500), (50, 2560400), (74, 1730000), (80, 1600250), (100, 1280200), (125, 1024160), (148, 865000), (160, 800125), (173, 740000), (185, 692000), (200, 640100), (250, 512080), (296, 432500), (346, 370000), (370, 346000), (400, 320050), (500, 256040), (592, 216250), (625, 204832), (692, 185000), (740, 173000), (800, 160025), (865, 148000), (925, 138400), (1000, 128020), (1184, 108125), (1250, 102416), (1384, 92500), (1480, 86500), (1730, 74000), (1850, 69200), (2000, 64010), (2500, 51208), (2768, 46250), (2960, 43250), (3460, 37000), (3700, 34600), (4000, 32005), (4325, 29600), (4625, 27680), (5000, 25604), (5536, 23125), (5920, 21625), (6401, 20000), (6920, 18500), (7400, 17300), (8650, 14800), (9250, 13840), (10000, 12802)]