81538880

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13411}}^1$

素因数の和:13447

約数の個数: 56

約数和(自身を含む): 204398880

約数和(自身を除く): 122860000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 6080, 13411, 26822, 53644, 67055, 107288, 134110, 214576, 254809, 268220, 429152, 509618, 536440, 858304, 1019236, 1072880, 1274045, 2038472, 2145760, 2548090, 4076944, 4291520, 5096180, 8153888, 10192360, 16307776, 20384720, 40769440, 81538880]

約数ペア:

[(1, 81538880), (2, 40769440), (4, 20384720), (5, 16307776), (8, 10192360), (10, 8153888), (16, 5096180), (19, 4291520), (20, 4076944), (32, 2548090), (38, 2145760), (40, 2038472), (64, 1274045), (76, 1072880), (80, 1019236), (95, 858304), (152, 536440), (160, 509618), (190, 429152), (304, 268220), (320, 254809), (380, 214576), (608, 134110), (760, 107288), (1216, 67055), (1520, 53644), (3040, 26822), (6080, 13411)]