20429108

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 42806400

約数和(自身を除く): 22377292

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 139, 181, 203, 278, 362, 406, 556, 724, 812, 973, 1267, 1946, 2534, 3892, 4031, 5068, 5249, 8062, 10498, 16124, 20996, 25159, 28217, 36743, 50318, 56434, 73486, 100636, 112868, 146972, 176113, 352226, 704452, 729611, 1459222, 2918444, 5107277, 10214554, 20429108]

約数ペア:

[(1, 20429108), (2, 10214554), (4, 5107277), (7, 2918444), (14, 1459222), (28, 729611), (29, 704452), (58, 352226), (116, 176113), (139, 146972), (181, 112868), (203, 100636), (278, 73486), (362, 56434), (406, 50318), (556, 36743), (724, 28217), (812, 25159), (973, 20996), (1267, 16124), (1946, 10498), (2534, 8062), (3892, 5249), (4031, 5068)]