128672000

素因数分解:

$2^8\times 5^3\times {\mathrm{4021}}^1$

素因数の和:4052

約数の個数: 72

約数和(自身を含む): 320617752

約数和(自身を除く): 191945752

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, 3200, 4000, 4021, 6400, 8000, 8042, 16000, 16084, 20105, 32000, 32168, 40210, 64336, 80420, 100525, 128672, 160840, 201050, 257344, 321680, 402100, 502625, 514688, 643360, 804200, 1005250, 1029376, 1286720, 1608400, 2010500, 2573440, 3216800, 4021000, 5146880, 6433600, 8042000, 12867200, 16084000, 25734400, 32168000, 64336000, 128672000]

約数ペア:

[(1, 128672000), (2, 64336000), (4, 32168000), (5, 25734400), (8, 16084000), (10, 12867200), (16, 8042000), (20, 6433600), (25, 5146880), (32, 4021000), (40, 3216800), (50, 2573440), (64, 2010500), (80, 1608400), (100, 1286720), (125, 1029376), (128, 1005250), (160, 804200), (200, 643360), (250, 514688), (256, 502625), (320, 402100), (400, 321680), (500, 257344), (640, 201050), (800, 160840), (1000, 128672), (1280, 100525), (1600, 80420), (2000, 64336), (3200, 40210), (4000, 32168), (4021, 32000), (6400, 20105), (8000, 16084), (8042, 16000)]