156986240

素因数分解:

$2^7\times 5^1\times {\mathrm{245291}}^1$

素因数の和:245310

約数の個数: 32

約数和(自身を含む): 375296760

約数和(自身を除く): 218310520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 245291, 490582, 981164, 1226455, 1962328, 2452910, 3924656, 4905820, 7849312, 9811640, 15698624, 19623280, 31397248, 39246560, 78493120, 156986240]

約数ペア:

[(1, 156986240), (2, 78493120), (4, 39246560), (5, 31397248), (8, 19623280), (10, 15698624), (16, 9811640), (20, 7849312), (32, 4905820), (40, 3924656), (64, 2452910), (80, 1962328), (128, 1226455), (160, 981164), (320, 490582), (640, 245291)]