21453784

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{599}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 45486000

約数和(自身を除く): 24032216

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 74, 88, 121, 148, 242, 296, 407, 484, 599, 814, 968, 1198, 1628, 2396, 3256, 4477, 4792, 6589, 8954, 13178, 17908, 22163, 26356, 35816, 44326, 52712, 72479, 88652, 144958, 177304, 243793, 289916, 487586, 579832, 975172, 1950344, 2681723, 5363446, 10726892, 21453784]

約数ペア:

[(1, 21453784), (2, 10726892), (4, 5363446), (8, 2681723), (11, 1950344), (22, 975172), (37, 579832), (44, 487586), (74, 289916), (88, 243793), (121, 177304), (148, 144958), (242, 88652), (296, 72479), (407, 52712), (484, 44326), (599, 35816), (814, 26356), (968, 22163), (1198, 17908), (1628, 13178), (2396, 8954), (3256, 6589), (4477, 4792)]