81824000

素因数分解:

$2^8\times 5^3\times {\mathrm{2557}}^1$

素因数の和:2588

約数の個数: 72

約数和(自身を含む): 203913528

約数和(自身を除く): 122089528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 640, 800, 1000, 1280, 1600, 2000, 2557, 3200, 4000, 5114, 6400, 8000, 10228, 12785, 16000, 20456, 25570, 32000, 40912, 51140, 63925, 81824, 102280, 127850, 163648, 204560, 255700, 319625, 327296, 409120, 511400, 639250, 654592, 818240, 1022800, 1278500, 1636480, 2045600, 2557000, 3272960, 4091200, 5114000, 8182400, 10228000, 16364800, 20456000, 40912000, 81824000]

約数ペア:

[(1, 81824000), (2, 40912000), (4, 20456000), (5, 16364800), (8, 10228000), (10, 8182400), (16, 5114000), (20, 4091200), (25, 3272960), (32, 2557000), (40, 2045600), (50, 1636480), (64, 1278500), (80, 1022800), (100, 818240), (125, 654592), (128, 639250), (160, 511400), (200, 409120), (250, 327296), (256, 319625), (320, 255700), (400, 204560), (500, 163648), (640, 127850), (800, 102280), (1000, 81824), (1280, 63925), (1600, 51140), (2000, 40912), (2557, 32000), (3200, 25570), (4000, 20456), (5114, 16000), (6400, 12785), (8000, 10228)]