158400640

素因数分解:

$2^7\times 5^1\times {\mathrm{247501}}^1$

素因数の和:247520

約数の個数: 32

約数和(自身を含む): 378678060

約数和(自身を除く): 220277420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 247501, 495002, 990004, 1237505, 1980008, 2475010, 3960016, 4950020, 7920032, 9900040, 15840064, 19800080, 31680128, 39600160, 79200320, 158400640]

約数ペア:

[(1, 158400640), (2, 79200320), (4, 39600160), (5, 31680128), (8, 19800080), (10, 15840064), (16, 9900040), (20, 7920032), (32, 4950020), (40, 3960016), (64, 2475010), (80, 1980008), (128, 1237505), (160, 990004), (320, 495002), (640, 247501)]