77951680

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12821}}^1$

素因数の和:12857

約数の個数: 56

約数和(自身を含む): 195407280

約数和(自身を除く): 117455600

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, 12821, 25642, 51284, 64105, 102568, 128210, 205136, 243599, 256420, 410272, 487198, 512840, 820544, 974396, 1025680, 1217995, 1948792, 2051360, 2435990, 3897584, 4102720, 4871980, 7795168, 9743960, 15590336, 19487920, 38975840, 77951680]

約数ペア:

[(1, 77951680), (2, 38975840), (4, 19487920), (5, 15590336), (8, 9743960), (10, 7795168), (16, 4871980), (19, 4102720), (20, 3897584), (32, 2435990), (38, 2051360), (40, 1948792), (64, 1217995), (76, 1025680), (80, 974396), (95, 820544), (152, 512840), (160, 487198), (190, 410272), (304, 256420), (320, 243599), (380, 205136), (608, 128210), (760, 102568), (1216, 64105), (1520, 51284), (3040, 25642), (6080, 12821)]