19156720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1979}}^1$

素因数の和:2014

約数の個数: 60

約数和(自身を含む): 48981240

約数和(自身を除く): 29824520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 1979, 2420, 3958, 4840, 7916, 9680, 9895, 15832, 19790, 21769, 31664, 39580, 43538, 79160, 87076, 108845, 158320, 174152, 217690, 239459, 348304, 435380, 478918, 870760, 957836, 1197295, 1741520, 1915672, 2394590, 3831344, 4789180, 9578360, 19156720]

約数ペア:

[(1, 19156720), (2, 9578360), (4, 4789180), (5, 3831344), (8, 2394590), (10, 1915672), (11, 1741520), (16, 1197295), (20, 957836), (22, 870760), (40, 478918), (44, 435380), (55, 348304), (80, 239459), (88, 217690), (110, 174152), (121, 158320), (176, 108845), (220, 87076), (242, 79160), (440, 43538), (484, 39580), (605, 31664), (880, 21769), (968, 19790), (1210, 15832), (1936, 9895), (1979, 9680), (2420, 7916), (3958, 4840)]