21655088

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:274

約数の個数: 80

約数和(自身を含む): 52496640

約数和(自身を除く): 30841552

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 107, 112, 139, 182, 208, 214, 278, 364, 428, 556, 728, 749, 856, 973, 1112, 1391, 1456, 1498, 1712, 1807, 1946, 2224, 2782, 2996, 3614, 3892, 5564, 5992, 7228, 7784, 9737, 11128, 11984, 12649, 14456, 14873, 15568, 19474, 22256, 25298, 28912, 29746, 38948, 50596, 59492, 77896, 101192, 104111, 118984, 155792, 193349, 202384, 208222, 237968, 386698, 416444, 773396, 832888, 1353443, 1546792, 1665776, 2706886, 3093584, 5413772, 10827544, 21655088]

約数ペア:

[(1, 21655088), (2, 10827544), (4, 5413772), (7, 3093584), (8, 2706886), (13, 1665776), (14, 1546792), (16, 1353443), (26, 832888), (28, 773396), (52, 416444), (56, 386698), (91, 237968), (104, 208222), (107, 202384), (112, 193349), (139, 155792), (182, 118984), (208, 104111), (214, 101192), (278, 77896), (364, 59492), (428, 50596), (556, 38948), (728, 29746), (749, 28912), (856, 25298), (973, 22256), (1112, 19474), (1391, 15568), (1456, 14873), (1498, 14456), (1712, 12649), (1807, 11984), (1946, 11128), (2224, 9737), (2782, 7784), (2996, 7228), (3614, 5992), (3892, 5564)]