127932800

素因数分解:

$2^7\times 5^2\times {\mathrm{39979}}^1$

素因数の和:40003

約数の個数: 48

約数和(自身を含む): 316041900

約数和(自身を除く): 188109100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 39979, 79958, 159916, 199895, 319832, 399790, 639664, 799580, 999475, 1279328, 1599160, 1998950, 2558656, 3198320, 3997900, 5117312, 6396640, 7995800, 12793280, 15991600, 25586560, 31983200, 63966400, 127932800]

約数ペア:

[(1, 127932800), (2, 63966400), (4, 31983200), (5, 25586560), (8, 15991600), (10, 12793280), (16, 7995800), (20, 6396640), (25, 5117312), (32, 3997900), (40, 3198320), (50, 2558656), (64, 1998950), (80, 1599160), (100, 1279328), (128, 999475), (160, 799580), (200, 639664), (320, 399790), (400, 319832), (640, 199895), (800, 159916), (1600, 79958), (3200, 39979)]