21534128

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^2\times {\mathrm{227}}^1$

素因数の和:271

約数の個数: 90

約数和(自身を含む): 53582508

約数和(自身を除く): 32048380

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 49, 56, 77, 88, 98, 112, 121, 154, 176, 196, 227, 242, 308, 392, 454, 484, 539, 616, 784, 847, 908, 968, 1078, 1232, 1589, 1694, 1816, 1936, 2156, 2497, 3178, 3388, 3632, 4312, 4994, 5929, 6356, 6776, 8624, 9988, 11123, 11858, 12712, 13552, 17479, 19976, 22246, 23716, 25424, 27467, 34958, 39952, 44492, 47432, 54934, 69916, 88984, 94864, 109868, 122353, 139832, 177968, 192269, 219736, 244706, 279664, 384538, 439472, 489412, 769076, 978824, 1345883, 1538152, 1957648, 2691766, 3076304, 5383532, 10767064, 21534128]

約数ペア:

[(1, 21534128), (2, 10767064), (4, 5383532), (7, 3076304), (8, 2691766), (11, 1957648), (14, 1538152), (16, 1345883), (22, 978824), (28, 769076), (44, 489412), (49, 439472), (56, 384538), (77, 279664), (88, 244706), (98, 219736), (112, 192269), (121, 177968), (154, 139832), (176, 122353), (196, 109868), (227, 94864), (242, 88984), (308, 69916), (392, 54934), (454, 47432), (484, 44492), (539, 39952), (616, 34958), (784, 27467), (847, 25424), (908, 23716), (968, 22246), (1078, 19976), (1232, 17479), (1589, 13552), (1694, 12712), (1816, 11858), (1936, 11123), (2156, 9988), (2497, 8624), (3178, 6776), (3388, 6356), (3632, 5929), (4312, 4994)]