1888319860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{9781}}^1$

素因数の和:10001

約数の個数: 72

約数和(自身を含む): 4636785384

約数和(自身を除く): 2748465524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 197, 245, 394, 490, 788, 980, 985, 1379, 1970, 2758, 3940, 5516, 6895, 9653, 9781, 13790, 19306, 19562, 27580, 38612, 39124, 48265, 48905, 68467, 96530, 97810, 136934, 193060, 195620, 273868, 342335, 479269, 684670, 958538, 1369340, 1917076, 1926857, 2396345, 3853714, 4792690, 7707428, 9585380, 9634285, 13487999, 19268570, 26975998, 38537140, 53951996, 67439995, 94415993, 134879990, 188831986, 269759980, 377663972, 472079965, 944159930, 1888319860]

約数ペア:

[(1, 1888319860), (2, 944159930), (4, 472079965), (5, 377663972), (7, 269759980), (10, 188831986), (14, 134879990), (20, 94415993), (28, 67439995), (35, 53951996), (49, 38537140), (70, 26975998), (98, 19268570), (140, 13487999), (196, 9634285), (197, 9585380), (245, 7707428), (394, 4792690), (490, 3853714), (788, 2396345), (980, 1926857), (985, 1917076), (1379, 1369340), (1970, 958538), (2758, 684670), (3940, 479269), (5516, 342335), (6895, 273868), (9653, 195620), (9781, 193060), (13790, 136934), (19306, 97810), (19562, 96530), (27580, 68467), (38612, 48905), (39124, 48265)]