19779520

素因数分解:

$2^6\times 5^1\times {\mathrm{113}}^1\times {\mathrm{547}}^1$

素因数の和:677

約数の個数: 56

約数和(自身を含む): 47603664

約数和(自身を除く): 27824144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 113, 160, 226, 320, 452, 547, 565, 904, 1094, 1130, 1808, 2188, 2260, 2735, 3616, 4376, 4520, 5470, 7232, 8752, 9040, 10940, 17504, 18080, 21880, 35008, 36160, 43760, 61811, 87520, 123622, 175040, 247244, 309055, 494488, 618110, 988976, 1236220, 1977952, 2472440, 3955904, 4944880, 9889760, 19779520]

約数ペア:

[(1, 19779520), (2, 9889760), (4, 4944880), (5, 3955904), (8, 2472440), (10, 1977952), (16, 1236220), (20, 988976), (32, 618110), (40, 494488), (64, 309055), (80, 247244), (113, 175040), (160, 123622), (226, 87520), (320, 61811), (452, 43760), (547, 36160), (565, 35008), (904, 21880), (1094, 18080), (1130, 17504), (1808, 10940), (2188, 9040), (2260, 8752), (2735, 7232), (3616, 5470), (4376, 4520)]