1640804515120

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{500245279}}^1$

素因数の和:500245333

約数の個数: 40

約数和(自身を含む): 3907916127360

約数和(自身を除く): 2267111612240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 500245279, 1000490558, 2000981116, 2501226395, 4001962232, 5002452790, 8003924464, 10004905580, 20009811160, 20510056439, 40019622320, 41020112878, 82040225756, 102550282195, 164080451512, 205100564390, 328160903024, 410201128780, 820402257560, 1640804515120]

約数ペア:

[(1, 1640804515120), (2, 820402257560), (4, 410201128780), (5, 328160903024), (8, 205100564390), (10, 164080451512), (16, 102550282195), (20, 82040225756), (40, 41020112878), (41, 40019622320), (80, 20510056439), (82, 20009811160), (164, 10004905580), (205, 8003924464), (328, 5002452790), (410, 4001962232), (656, 2501226395), (820, 2000981116), (1640, 1000490558), (3280, 500245279)]