20550640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^3\times {\mathrm{193}}^1$

素因数の和:239

約数の個数: 80

約数和(自身を含む): 52826976

約数和(自身を除く): 32276336

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 193, 220, 242, 386, 440, 484, 605, 772, 880, 965, 968, 1210, 1331, 1544, 1930, 1936, 2123, 2420, 2662, 3088, 3860, 4246, 4840, 5324, 6655, 7720, 8492, 9680, 10615, 10648, 13310, 15440, 16984, 21230, 21296, 23353, 26620, 33968, 42460, 46706, 53240, 84920, 93412, 106480, 116765, 169840, 186824, 233530, 256883, 373648, 467060, 513766, 934120, 1027532, 1284415, 1868240, 2055064, 2568830, 4110128, 5137660, 10275320, 20550640]

約数ペア:

[(1, 20550640), (2, 10275320), (4, 5137660), (5, 4110128), (8, 2568830), (10, 2055064), (11, 1868240), (16, 1284415), (20, 1027532), (22, 934120), (40, 513766), (44, 467060), (55, 373648), (80, 256883), (88, 233530), (110, 186824), (121, 169840), (176, 116765), (193, 106480), (220, 93412), (242, 84920), (386, 53240), (440, 46706), (484, 42460), (605, 33968), (772, 26620), (880, 23353), (965, 21296), (968, 21230), (1210, 16984), (1331, 15440), (1544, 13310), (1930, 10648), (1936, 10615), (2123, 9680), (2420, 8492), (2662, 7720), (3088, 6655), (3860, 5324), (4246, 4840)]