81454240

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72727}}^1$

素因数の和:72749

約数の個数: 48

約数和(自身を含む): 219929472

約数和(自身を除く): 138475232

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72727, 145454, 290908, 363635, 509089, 581816, 727270, 1018178, 1163632, 1454540, 2036356, 2327264, 2545445, 2909080, 4072712, 5090890, 5818160, 8145424, 10181780, 11636320, 16290848, 20363560, 40727120, 81454240]

約数ペア:

[(1, 81454240), (2, 40727120), (4, 20363560), (5, 16290848), (7, 11636320), (8, 10181780), (10, 8145424), (14, 5818160), (16, 5090890), (20, 4072712), (28, 2909080), (32, 2545445), (35, 2327264), (40, 2036356), (56, 1454540), (70, 1163632), (80, 1018178), (112, 727270), (140, 581816), (160, 509089), (224, 363635), (280, 290908), (560, 145454), (1120, 72727)]