21771530

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{947}}^1$

素因数の和:995

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 23618710

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 121, 190, 209, 242, 418, 605, 947, 1045, 1210, 1894, 2090, 2299, 4598, 4735, 9470, 10417, 11495, 17993, 20834, 22990, 35986, 52085, 89965, 104170, 114587, 179930, 197923, 229174, 395846, 572935, 989615, 1145870, 1979230, 2177153, 4354306, 10885765, 21771530]

約数ペア:

[(1, 21771530), (2, 10885765), (5, 4354306), (10, 2177153), (11, 1979230), (19, 1145870), (22, 989615), (38, 572935), (55, 395846), (95, 229174), (110, 197923), (121, 179930), (190, 114587), (209, 104170), (242, 89965), (418, 52085), (605, 35986), (947, 22990), (1045, 20834), (1210, 17993), (1894, 11495), (2090, 10417), (2299, 9470), (4598, 4735)]