18871684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 38384640

約数和(自身を除く): 19512956

約数列:

[1, 2, 4, 13, 23, 26, 31, 46, 52, 62, 92, 124, 299, 403, 509, 598, 713, 806, 1018, 1196, 1426, 1612, 2036, 2852, 6617, 9269, 11707, 13234, 15779, 18538, 23414, 26468, 31558, 37076, 46828, 63116, 152191, 205127, 304382, 362917, 410254, 608764, 725834, 820508, 1451668, 4717921, 9435842, 18871684]

約数ペア:

[(1, 18871684), (2, 9435842), (4, 4717921), (13, 1451668), (23, 820508), (26, 725834), (31, 608764), (46, 410254), (52, 362917), (62, 304382), (92, 205127), (124, 152191), (299, 63116), (403, 46828), (509, 37076), (598, 31558), (713, 26468), (806, 23414), (1018, 18538), (1196, 15779), (1426, 13234), (1612, 11707), (2036, 9269), (2852, 6617)]