20176985080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{181513}}^1$

素因数の和:181928

約数の個数: 64

約数和(自身を含む): 52014651840

約数和(自身を除く): 31837666760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 397, 794, 1588, 1985, 2779, 3176, 3970, 5558, 7940, 11116, 13895, 15880, 22232, 27790, 55580, 111160, 181513, 363026, 726052, 907565, 1270591, 1452104, 1815130, 2541182, 3630260, 5082364, 6352955, 7260520, 10164728, 12705910, 25411820, 50823640, 72060661, 144121322, 288242644, 360303305, 504424627, 576485288, 720606610, 1008849254, 1441213220, 2017698508, 2522123135, 2882426440, 4035397016, 5044246270, 10088492540, 20176985080]

約数ペア:

[(1, 20176985080), (2, 10088492540), (4, 5044246270), (5, 4035397016), (7, 2882426440), (8, 2522123135), (10, 2017698508), (14, 1441213220), (20, 1008849254), (28, 720606610), (35, 576485288), (40, 504424627), (56, 360303305), (70, 288242644), (140, 144121322), (280, 72060661), (397, 50823640), (794, 25411820), (1588, 12705910), (1985, 10164728), (2779, 7260520), (3176, 6352955), (3970, 5082364), (5558, 3630260), (7940, 2541182), (11116, 1815130), (13895, 1452104), (15880, 1270591), (22232, 907565), (27790, 726052), (55580, 363026), (111160, 181513)]