159821440

素因数分解:

$2^7\times 5^1\times {\mathrm{249721}}^1$

素因数の和:249740

約数の個数: 32

約数和(自身を含む): 382074660

約数和(自身を除く): 222253220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 249721, 499442, 998884, 1248605, 1997768, 2497210, 3995536, 4994420, 7991072, 9988840, 15982144, 19977680, 31964288, 39955360, 79910720, 159821440]

約数ペア:

[(1, 159821440), (2, 79910720), (4, 39955360), (5, 31964288), (8, 19977680), (10, 15982144), (16, 9988840), (20, 7991072), (32, 4994420), (40, 3995536), (64, 2497210), (80, 1997768), (128, 1248605), (160, 998884), (320, 499442), (640, 249721)]