19771640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{293}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 51226560

約数和(自身を除く): 31454920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 241, 280, 293, 482, 586, 964, 1172, 1205, 1465, 1687, 1928, 2051, 2344, 2410, 2930, 3374, 4102, 4820, 5860, 6748, 8204, 8435, 9640, 10255, 11720, 13496, 16408, 16870, 20510, 33740, 41020, 67480, 70613, 82040, 141226, 282452, 353065, 494291, 564904, 706130, 988582, 1412260, 1977164, 2471455, 2824520, 3954328, 4942910, 9885820, 19771640]

約数ペア:

[(1, 19771640), (2, 9885820), (4, 4942910), (5, 3954328), (7, 2824520), (8, 2471455), (10, 1977164), (14, 1412260), (20, 988582), (28, 706130), (35, 564904), (40, 494291), (56, 353065), (70, 282452), (140, 141226), (241, 82040), (280, 70613), (293, 67480), (482, 41020), (586, 33740), (964, 20510), (1172, 16870), (1205, 16408), (1465, 13496), (1687, 11720), (1928, 10255), (2051, 9640), (2344, 8435), (2410, 8204), (2930, 6748), (3374, 5860), (4102, 4820)]