21618520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7019}}^1$

素因数の和:7048

約数の個数: 64

約数和(自身を含む): 60652800

約数和(自身を除く): 39034280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 7019, 14038, 28076, 35095, 49133, 56152, 70190, 77209, 98266, 140380, 154418, 196532, 245665, 280760, 308836, 386045, 393064, 491330, 540463, 617672, 772090, 982660, 1080926, 1544180, 1965320, 2161852, 2702315, 3088360, 4323704, 5404630, 10809260, 21618520]

約数ペア:

[(1, 21618520), (2, 10809260), (4, 5404630), (5, 4323704), (7, 3088360), (8, 2702315), (10, 2161852), (11, 1965320), (14, 1544180), (20, 1080926), (22, 982660), (28, 772090), (35, 617672), (40, 540463), (44, 491330), (55, 393064), (56, 386045), (70, 308836), (77, 280760), (88, 245665), (110, 196532), (140, 154418), (154, 140380), (220, 98266), (280, 77209), (308, 70190), (385, 56152), (440, 49133), (616, 35095), (770, 28076), (1540, 14038), (3080, 7019)]