8141440

素因数分解:

$2^7\times 5^1\times {\mathrm{12721}}^1$

素因数の和:12740

約数の個数: 32

約数和(自身を含む): 19464660

約数和(自身を除く): 11323220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 12721, 25442, 50884, 63605, 101768, 127210, 203536, 254420, 407072, 508840, 814144, 1017680, 1628288, 2035360, 4070720, 8141440]

約数ペア:

[(1, 8141440), (2, 4070720), (4, 2035360), (5, 1628288), (8, 1017680), (10, 814144), (16, 508840), (20, 407072), (32, 254420), (40, 203536), (64, 127210), (80, 101768), (128, 63605), (160, 50884), (320, 25442), (640, 12721)]