81559250

素因数分解:

$2^1\times 5^3\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 159999840

約数和(自身を除く): 78440590

約数列:

[1, 2, 5, 10, 25, 41, 50, 73, 82, 109, 125, 146, 205, 218, 250, 365, 410, 545, 730, 1025, 1090, 1825, 2050, 2725, 2993, 3650, 4469, 5125, 5450, 5986, 7957, 8938, 9125, 10250, 13625, 14965, 15914, 18250, 22345, 27250, 29930, 39785, 44690, 74825, 79570, 111725, 149650, 198925, 223450, 326237, 374125, 397850, 558625, 652474, 748250, 994625, 1117250, 1631185, 1989250, 3262370, 8155925, 16311850, 40779625, 81559250]

約数ペア:

[(1, 81559250), (2, 40779625), (5, 16311850), (10, 8155925), (25, 3262370), (41, 1989250), (50, 1631185), (73, 1117250), (82, 994625), (109, 748250), (125, 652474), (146, 558625), (205, 397850), (218, 374125), (250, 326237), (365, 223450), (410, 198925), (545, 149650), (730, 111725), (1025, 79570), (1090, 74825), (1825, 44690), (2050, 39785), (2725, 29930), (2993, 27250), (3650, 22345), (4469, 18250), (5125, 15914), (5450, 14965), (5986, 13625), (7957, 10250), (8938, 9125)]