128231900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{439}}^1$

素因数の和:603

約数の個数: 72

約数和(自身を含む): 293314560

約数和(自身を除く): 165082660

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 127, 230, 254, 439, 460, 508, 575, 635, 878, 1150, 1270, 1756, 2195, 2300, 2540, 2921, 3175, 4390, 5842, 6350, 8780, 10097, 10975, 11684, 12700, 14605, 20194, 21950, 29210, 40388, 43900, 50485, 55753, 58420, 73025, 100970, 111506, 146050, 201940, 223012, 252425, 278765, 292100, 504850, 557530, 1009700, 1115060, 1282319, 1393825, 2564638, 2787650, 5129276, 5575300, 6411595, 12823190, 25646380, 32057975, 64115950, 128231900]

約数ペア:

[(1, 128231900), (2, 64115950), (4, 32057975), (5, 25646380), (10, 12823190), (20, 6411595), (23, 5575300), (25, 5129276), (46, 2787650), (50, 2564638), (92, 1393825), (100, 1282319), (115, 1115060), (127, 1009700), (230, 557530), (254, 504850), (439, 292100), (460, 278765), (508, 252425), (575, 223012), (635, 201940), (878, 146050), (1150, 111506), (1270, 100970), (1756, 73025), (2195, 58420), (2300, 55753), (2540, 50485), (2921, 43900), (3175, 40388), (4390, 29210), (5842, 21950), (6350, 20194), (8780, 14605), (10097, 12700), (10975, 11684)]