19888790

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2011}}^1$

素因数の和:2084

約数の個数: 32

約数和(自身を含む): 38244096

約数和(自身を除く): 18355306

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 2011, 4022, 4945, 9890, 10055, 20110, 46253, 86473, 92506, 172946, 231265, 432365, 462530, 864730, 1988879, 3977758, 9944395, 19888790]

約数ペア:

[(1, 19888790), (2, 9944395), (5, 3977758), (10, 1988879), (23, 864730), (43, 462530), (46, 432365), (86, 231265), (115, 172946), (215, 92506), (230, 86473), (430, 46253), (989, 20110), (1978, 10055), (2011, 9890), (4022, 4945)]