20830640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11321}}^1$

素因数の和:11357

約数の個数: 40

約数和(自身を含む): 50541408

約数和(自身を除く): 29710768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11321, 22642, 45284, 56605, 90568, 113210, 181136, 226420, 260383, 452840, 520766, 905680, 1041532, 1301915, 2083064, 2603830, 4166128, 5207660, 10415320, 20830640]

約数ペア:

[(1, 20830640), (2, 10415320), (4, 5207660), (5, 4166128), (8, 2603830), (10, 2083064), (16, 1301915), (20, 1041532), (23, 905680), (40, 520766), (46, 452840), (80, 260383), (92, 226420), (115, 181136), (184, 113210), (230, 90568), (368, 56605), (460, 45284), (920, 22642), (1840, 11321)]