164290640

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20333}}^1$

素因数の和:20447

約数の個数: 40

約数和(自身を含む): 385776648

約数和(自身を除く): 221486008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 20333, 40666, 81332, 101665, 162664, 203330, 325328, 406660, 813320, 1626640, 2053633, 4107266, 8214532, 10268165, 16429064, 20536330, 32858128, 41072660, 82145320, 164290640]

約数ペア:

[(1, 164290640), (2, 82145320), (4, 41072660), (5, 32858128), (8, 20536330), (10, 16429064), (16, 10268165), (20, 8214532), (40, 4107266), (80, 2053633), (101, 1626640), (202, 813320), (404, 406660), (505, 325328), (808, 203330), (1010, 162664), (1616, 101665), (2020, 81332), (4040, 40666), (8080, 20333)]