21704144

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:328

約数の個数: 80

約数和(自身を含む): 53329920

約数和(自身を除く): 31625776

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 79, 88, 112, 154, 158, 176, 223, 308, 316, 446, 553, 616, 632, 869, 892, 1106, 1232, 1264, 1561, 1738, 1784, 2212, 2453, 3122, 3476, 3568, 4424, 4906, 6083, 6244, 6952, 8848, 9812, 12166, 12488, 13904, 17171, 17617, 19624, 24332, 24976, 34342, 35234, 39248, 48664, 68684, 70468, 97328, 123319, 137368, 140936, 193787, 246638, 274736, 281872, 387574, 493276, 775148, 986552, 1356509, 1550296, 1973104, 2713018, 3100592, 5426036, 10852072, 21704144]

約数ペア:

[(1, 21704144), (2, 10852072), (4, 5426036), (7, 3100592), (8, 2713018), (11, 1973104), (14, 1550296), (16, 1356509), (22, 986552), (28, 775148), (44, 493276), (56, 387574), (77, 281872), (79, 274736), (88, 246638), (112, 193787), (154, 140936), (158, 137368), (176, 123319), (223, 97328), (308, 70468), (316, 68684), (446, 48664), (553, 39248), (616, 35234), (632, 34342), (869, 24976), (892, 24332), (1106, 19624), (1232, 17617), (1264, 17171), (1561, 13904), (1738, 12488), (1784, 12166), (2212, 9812), (2453, 8848), (3122, 6952), (3476, 6244), (3568, 6083), (4424, 4906)]