20977610

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{409}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 18697270

約数列:

[1, 2, 5, 10, 23, 46, 115, 223, 230, 409, 446, 818, 1115, 2045, 2230, 4090, 5129, 9407, 10258, 18814, 25645, 47035, 51290, 91207, 94070, 182414, 456035, 912070, 2097761, 4195522, 10488805, 20977610]

約数ペア:

[(1, 20977610), (2, 10488805), (5, 4195522), (10, 2097761), (23, 912070), (46, 456035), (115, 182414), (223, 94070), (230, 91207), (409, 51290), (446, 47035), (818, 25645), (1115, 18814), (2045, 10258), (2230, 9407), (4090, 5129)]