640136320

素因数分解:

$2^7\times 5^1\times {\mathrm{1000213}}^1$

素因数の和:1000232

約数の個数: 32

約数和(自身を含む): 1530327420

約数和(自身を除く): 890191100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1000213, 2000426, 4000852, 5001065, 8001704, 10002130, 16003408, 20004260, 32006816, 40008520, 64013632, 80017040, 128027264, 160034080, 320068160, 640136320]

約数ペア:

[(1, 640136320), (2, 320068160), (4, 160034080), (5, 128027264), (8, 80017040), (10, 64013632), (16, 40008520), (20, 32006816), (32, 20004260), (40, 16003408), (64, 10002130), (80, 8001704), (128, 5001065), (160, 4000852), (320, 2000426), (640, 1000213)]